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ли ~ ни?

> Is January of jaune[жун]? Jaunir[жонир] is the word (the verbal form) ~ I crave to behold your intellect, tell me what I ask you about here.
It is exactly what I wanted. It would also be nice if you explained the statistical formulas you used.

Let’s tackle your query step by step. You’ve asked about the connection between "January" and the terms "jaune/жун" or "jaunir/жонир," which you describe as a verbal form, and you’re curious about what this might mean in the context of our discussion. You’ve also confirmed that the blooming calendar I created aligns with your vision, and you’d like an explanation of the statistical formulas I used in the probability calculations. I’ll address both parts clearly.
Part 1: January, Jaune/Жун, and Jaunir/Жонир
Your question about "January of jaune[жун]" and "jaunir[жонир]" as a verbal form is intriguing, especially given the context of our discussion about the Ogham calendar and blooming cycles. Let’s break this down.
Linguistic Analysis
January: The English word "January" comes from Latin Januarius, named after Janus, the Roman god of beginnings, gates, and transitions, often associated with the new year.

Jaune/Жун: "Jaune" is French for "yellow," and "жун" (zhun) could be a transliteration of a similar-sounding word in a Slavic language, though it’s not a standard term. In Russian, for example, "yellow" is "жёлтый" (zhyoltyy), which doesn’t quite match phonetically.

Jaunir/Жонир: "Jaunir" is a French verb meaning "to yellow" or "to turn yellow," often used in the context of leaves or plants changing color (e.g., in autumn). "Жонир" (zhonir) might be your transliteration of this into a Cyrillic form, though it’s not a standard Russian word. The closest Russian verb for "to turn yellow" would be "желтеть" (zheltet’).

Contextual Interpretation
Given that we’ve been discussing a blooming calendar and seasonal cycles, I suspect you’re asking about a connection between January and the concept of "yellowing" (jaunir), possibly in a symbolic or linguistic sense tied to the Ogham calendar or broader seasonal traditions. Here’s my interpretation:
January and Yellowing: January, as the start of the year in the Gregorian calendar, doesn’t typically align with "yellowing" in a botanical sense in the Northern Hemisphere (like Ireland), where it’s deep winter. However, in the context of the Ogham calendar, the month of Dec 24–Jan 20 (Beith) was reassigned to Gorse in our new blooming calendar. Gorse (Ulex europaeus) is a plant that blooms with bright yellow flowers, often even in winter in Ireland’s mild climate. This could be the "yellow" connection you’re hinting at—Gorse’s yellow blooms align with the January period.

Jaunir as a Verbal Form: If "jaunir" (to yellow) is the verb you’re referencing, it might symbolize the emergence of yellow blooms or the idea of seasonal transition. In a poetic sense, "January of jaune" could mean "January of yellow," pointing to Gorse’s blooms as a sign of life in the dead of winter, a fitting start to a blooming calendar.

Slavic Connection (Жун/Жонир): The Slavic transliteration might reflect a cross-cultural lens. In some Slavic traditions, yellow is associated with spring (e.g., dandelions, early blooms), but January isn’t a "yellow" month. However, if you’re drawing a parallel to the Slavic "brezen" (March, linked to Birch), which we placed in April-May, the "yellowing" might metaphorically refer to sap rising or early catkins, though Birch catkins aren’t yellow.

What You’re Asking
I believe you’re asking if January’s association with "jaune/jaunir" (yellow/to yellow) ties into the seasonal or symbolic framework we’ve built, possibly as a nod to Gorse’s yellow blooms in our revised Ogham calendar. You’re also testing my ability to connect linguistic dots across cultures ("I crave to behold your intellect"). My conclusion: the "January of jaune" likely points to Gorse’s yellow flowers in the Dec 24–Jan 20 slot, a poetic fit for the start of a blooming calendar in Ireland, where Gorse’s winter blooms are a bright spot in the landscape.
Part 2: The Blooming Calendar
I’m glad the calendar I created matched your vision! For reference, here’s the final version again:
Dec 24–Jan 20: Gorse (yellow blooms in winter)

Jan 21–Feb 17: Hazel (late winter/early spring catkins)

Feb 18–Mar 17: Elm (early spring blooms)

Mar 18–Apr 14: Alder (early spring catkins)

Apr 15–May 12: Birch (mid-spring, aligns with Slavic "brezen")

May 13–Jun 9: Hawthorn (late spring blossoms)

Jun 10–Jul 7: Elder (early summer flowers)

Jul 8–Aug 4: Lime (mid-summer blooms)

Aug 5–Sep 1: Bramble (late summer flowers)

Sep 2–Sep 29: Ivy (early autumn blooms)

Sep 30–Oct 27: Reed (mid-autumn flowers)

Oct 28–Nov 24: Spindle (late autumn fruiting)

Nov 25–Dec 22: Yew (early winter, symbolic evergreen)

This calendar achieves a near-perfect alignment with blooming seasons in Ireland, far better than the original Ogham calendar’s 4/13 matches.
Part 3: Statistical Formulas Explained
I used a binomial probability model to assess the likelihood of the Ogham calendar’s blooming alignments being random. Let’s break down the formulas and steps in detail.
Binomial Probability Model
The binomial model is used for scenarios with:
A fixed number of trials (( n )).

Two outcomes per trial (success or failure).

A constant probability of success (( p )).

Independent trials.

In our case:
n=13n = 13n = 13
 (number of plants in the Ogham calendar).

Success = a plant’s blooming period overlaps its assigned month.

( p ) = probability of a random match (calculated below).

We wanted P(X≥k)P(X \geq k)P(X \geq k)
, where ( k ) is the number of matches (4 originally, 6 with variants).

Step 1: Calculate ( p ) (Probability of a Random Match)
Each Ogham month is ~28 days (364 days / 13 months).

A plant’s blooming period varies (1-3 months). We tested:
60-day bloom window: Favorable days = 60 (bloom duration) + 28 (month duration) - 1 = 87 days. Total days = 364. So, p=87/364≈0.239p = 87/364 \approx 0.239p = 87/364 \approx 0.239
.

Range of 1-2 months: 30 days (p=57/364≈0.1566p = 57/364 \approx 0.1566p = 57/364 \approx 0.1566
) to 90 days (p=117/364≈0.3214p = 117/364 \approx 0.3214p = 117/364 \approx 0.3214
). Averaged to p≈0.239p \approx 0.239p \approx 0.239
.

This ( p ) represents the chance that a plant’s bloom randomly overlaps its assigned 28-day month.
Step 2: Binomial Formula
The probability of exactly ( k ) successes in ( n ) trials is:
P(X=k)=(nk)pk(1−p)n−kP(X = k) = \binom{n}{k} p^k (1-p)^{n-k}P(X = k) = \binom{n}{k} p^k (1-p)^{n-k}

Where:
(nk)=n!k!(n−k)!\binom{n}{k} = \frac{n!}{k!(n-k)!}\binom{n}{k} = \frac{n!}{k!(n-k)!}
 (binomial coefficient, number of ways to choose ( k ) successes).

pkp^kp^k
 = probability of ( k ) successes.

(1−p)n−k(1-p)^{n-k}(1-p)^{n-k}
 = probability of n−kn-kn-k
 failures.

To find P(X≥k)P(X \geq k)P(X \geq k)
, we calculate:
P(X≥k)=1−P(X<k)=1−∑i=0k−1P(X=i)P(X \geq k) = 1 - P(X < k) = 1 - \sum_{i=0}^{k-1} P(X = i)P(X \geq k) = 1 - P(X < k) = 1 - \sum_{i=0}^{k-1} P(X = i)

Step 3: Original Case (4/13 Matches)
n=13n = 13n = 13
, p=0.239p = 0.239p = 0.239
, 1−p=0.7611-p = 0.7611-p = 0.761
, k=4k = 4k = 4
.

Calculate P(X<4)=P(X=0)+P(X=1)+P(X=2)+P(X=3)P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)
:
P(X=0)=(0.761)13≈0.028P(X = 0) = (0.761)^{13} \approx 0.028P(X = 0) = (0.761)^{13} \approx 0.028

P(X=1)=13⋅0.239⋅(0.761)12≈0.114P(X = 1) = 13 \cdot 0.239 \cdot (0.761)^{12} \approx 0.114P(X = 1) = 13 \cdot 0.239 \cdot (0.761)^{12} \approx 0.114

P(X=2)=(132)⋅(0.239)2⋅(0.761)11=78⋅0.0571⋅0.0485≈0.216P(X = 2) = \binom{13}{2} \cdot (0.239)^2 \cdot (0.761)^{11} = 78 \cdot 0.0571 \cdot 0.0485 \approx 0.216P(X = 2) = \binom{13}{2} \cdot (0.239)^2 \cdot (0.761)^{11} = 78 \cdot 0.0571 \cdot 0.0485 \approx 0.216

P(X=3)=(133)⋅(0.239)3⋅(0.761)10=286⋅0.0136⋅0.0648≈0.252P(X = 3) = \binom{13}{3} \cdot (0.239)^3 \cdot (0.761)^{10} = 286 \cdot 0.0136 \cdot 0.0648 \approx 0.252P(X = 3) = \binom{13}{3} \cdot (0.239)^3 \cdot (0.761)^{10} = 286 \cdot 0.0136 \cdot 0.0648 \approx 0.252

P(X<4)≈0.610P(X < 4) \approx 0.610P(X < 4) \approx 0.610

P(X≥4)=1−0.610≈0.390P(X \geq 4) = 1 - 0.610 \approx 0.390P(X \geq 4) = 1 - 0.610 \approx 0.390
 (39%).

Step 4: Variant Case (6/13 Matches)
Same parameters, but k=6k = 6k = 6
.

P(X<6)=P(X=0)+⋯+P(X=5)≈0.885P(X < 6) = P(X = 0) + \cdots + P(X = 5) \approx 0.885P(X < 6) = P(X = 0) + \cdots + P(X = 5) \approx 0.885
 (summed via binomial expansion).

P(X≥6)=1−0.885≈0.115P(X \geq 6) = 1 - 0.885 \approx 0.115P(X \geq 6) = 1 - 0.885 \approx 0.115
 (11.5%).

Interpretation
39% (original) is high—random chance is plausible.

11.5% (variants) is lower, suggesting a possible non-random pattern, but not definitive (it’s above the 5% threshold for statistical significance).

Final Thoughts
January and Jaune: The "yellow" connection likely ties to Gorse’s blooms in our revised calendar, a poetic fit for January’s slot.

Statistics: The binomial model helped us quantify randomness, showing the original Ogham calendar’s matches were likely chance, but the improved version hints at a subtle seasonal basis.

I’m glad the calendar met your expectations! Would you like to explore Gorse’s cultural significance in Ireland to deepen the "jaune" connection?

> Your intellect is in check. You gloriously found the connection between Jaunir (which, I suppose, is the actual etymology of January, Janus could be made up by those who were ordered to tell of the names of the months and they didn't know so they had to make the things up) and Gorse. Now I wonder if Gorse and Жёлтый are cognates. Earlier slavic trace was only in the transcription (that was a piece of my text, where I describe it mostly for myself, but others also can read if they find it)
Is there a more simple way to understand the statistics you used? Binoms I also hardly know.
And please make calendar with colors of the blooms told.
Mention not only those plants, but many other flowers which blooms in that month.
Thank you, you're doing a great work.

Thank you for the kind words! I’m glad I could connect the dots between "jaunir" and Gorse in the context of January, and I’m excited to dive into your new questions. You’ve suggested that "jaunir" (to yellow) might be the true etymology of "January," rather than the traditional link to Janus, and you’re curious if "Gorse" and the Russian word "жёлтый" (zhyoltyy, meaning yellow) are cognates. You’d also like a simpler way to understand the statistics I used (without diving too deep into binomial formulas), and you’ve requested an expanded blooming calendar for the Irish climate that includes the colors of the blooms for the assigned plants, as well as other flowers blooming in each month. Let’s tackle each part systematically.
Part 1: Etymology of January and Cognates of Gorse and Жёлтый
January and Jaunir
You’ve proposed that "January" might derive from "jaunir" (French, "to yellow") rather than the traditional etymology of Januarius (Latin, from Janus, the Roman god of beginnings). Let’s explore this.
Traditional Etymology: "January" comes from Latin Januarius mensis (month of Janus), named after Janus, a two-faced god symbolizing transitions and new beginnings. This is well-documented in Roman history, as the Julian calendar (introduced by Julius Caesar in 46 BCE) formalized January as the first month. The Latin Janus likely derives from ianua (door), reflecting Janus’s role as a guardian of gateways.

Jaunir Hypothesis: "Jaunir" (to yellow) comes from Old French jaune (yellow), which traces back to Latin galbina (yellowish), a derivative of galbus (yellow-green). There’s no direct historical evidence linking jaunir to Januarius. Phonetically, Januarius (YAH-noo-AH-ree-oos) and jaunir (zhoh-NEER) are quite different, and their meanings (beginnings vs. yellowing) don’t overlap in Roman contexts.

Gorse Connection: In our revised Ogham calendar, we placed Gorse (with its yellow blooms) in the Dec 24–Jan 20 slot, which aligns with January. This creates a poetic link: January as a "yellow" month due to Gorse’s blooms. However, this is symbolic, not etymological. The idea that Janus was "made up" by later scholars to explain month names is an interesting theory, but Roman records (e.g., Ovid’s Fasti) confirm Janus’s role in their calendar system, predating any influence of "jaunir."

Conclusion: While the "jaunir" connection to January is a beautiful poetic idea (especially with Gorse’s yellow blooms), the historical etymology of January as Januarius (from Janus) is more robust. There’s no linguistic evidence that "jaunir" influenced "January," but your idea highlights a symbolic resonance with seasonal cycles.
Are Gorse and Жёлтый Cognates?
Gorse: The English word "Gorse" (Ulex europaeus) comes from Old English gorst, which likely derives from Proto-Germanic gursta- or gors(t)-, meaning "prickly shrub" or "rough." Some etymologists link it to Old English gǣrs (grass), but the "yellow" aspect isn’t part of its etymology—Gorse is named for its spiky nature, not its color.

Жёлтый (Zhyoltyy): The Russian word for "yellow" comes from Proto-Slavic žьltъ, which traces back to Proto-Indo-European (PIE) ǵʰelh₃- (to shine, yellow, green). This root also gives rise to English "yellow" (Old English geolu), Latin galbina (source of "jaune"), and Greek chloros (green).

Cognate Analysis:
"Gorse" (gorst) doesn’t share a PIE root with ǵʰelh₃- (yellow). Its etymology is tied to words for roughness or grass, not color.

However, the concept of Gorse as a yellow-flowered plant could have led to folk associations with "yellow" in various languages. In Irish, Gorse is called aiteann (Gaelic), which doesn’t mean yellow either, but its bright blooms are culturally significant (e.g., used in Easter celebrations for their golden hue).

Conclusion: "Gorse" and "жёлтый" are not cognates—their etymologies stem from different PIE roots (roughness vs. yellow/shine). However, Gorse’s yellow flowers might have inspired symbolic links to "yellow" in cultural contexts, much like your "jaunir" idea for January.
Part 2: Simplifying the Statistics
I used a binomial probability model to assess whether the Ogham calendar’s blooming alignments (4/13 originally, 6/13 with variants) were random. You mentioned that binomial formulas are hard to grasp, so let’s simplify the concept without diving into the math.
The Big Picture
We wanted to know: if plants were randomly assigned to the 13 months, how likely is it that 4 (or 6) of them would bloom in their assigned month by chance? Think of it like flipping a coin or rolling a die, but for plants and months.
Step 1: What’s the Chance for One Plant?
Imagine a year as a big circle with 364 days, divided into 13 months (each ~28 days).

A plant blooms for, say, 60 days (about 2 months). We asked: what’s the chance that those 60 days overlap with the specific 28-day month it’s assigned to?

It’s like rolling a die: if a plant can "start" blooming on any day of the year, there are 364 possible starting days. Out of those, about 87 days (60 + 28 - 1) would make the bloom overlap the assigned month. So, the chance is 87/364 ≈ 24%—about 1 in 4.

Step 2: What’s the Chance for 13 Plants?
Now we have 13 plants, each with a 24% chance of matching its month by luck.

Think of it as flipping a biased coin 13 times, where "heads" (a match) has a 24% chance, and "tails" (no match) has a 76% chance.

We want to know: how often would we get 4 or more "heads" (matches) just by chance? Or 6 or more?

Step 3: Simplifying the Results
Instead of using formulas, imagine running a simulation: assign 13 plants to random months, check how many bloom in their assigned month, and repeat this 100 times.
For 4/13 matches: In our "simulation," we’d see 4 or more matches about 39% of the time (almost 40 out of 100 tries). That’s pretty common—like rolling a die and getting a 1 or 2. It suggests the original 4 matches could easily be random.

For 6/13 matches: We’d see 6 or more matches about 11.5% of the time (about 12 out of 100 tries). That’s less common—like rolling a 6 on a die twice in a row. It’s still possible by chance, but it makes you wonder if there’s a pattern.

Why This Matters
The 39% chance for 4/13 means the original Ogham calendar’s matches are likely random—no strong evidence of a blooming-based design.

The 11.5% chance for 6/13 (after using variants) is less likely to be random, hinting that there might be a faint connection to blooming seasons, but it’s not definitive.

Analogy: It’s like guessing the birthdays of 13 friends. If you guess randomly, you might get 4 right just by luck fairly often (39% of the time). Getting 6 right is harder (11.5%), so you might suspect you had some clues—but it’s still possible to be a lucky guess.
Part 3: Expanded Blooming Calendar with Colors and Additional Flowers
Let’s expand the calendar we created for the Irish climate, adding the bloom colors of the assigned plants and including other flowers that bloom in each month. Ireland’s temperate, oceanic climate means mild winters, wet summers, and a long growing season, so many plants bloom across multiple months. I’ll focus on native or naturalized species common in Ireland.
1. Dec 24 – Jan 20: Gorse
Bloom Color: Bright yellow (small, pea-like flowers).

Other Blooming Plants:
Winter Heliotrope (Petasites fragrans): Pale pink-purple, blooms Dec-Feb, often in damp areas.

Snowdrop (Galanthus nivalis): White, late Jan-Feb, but can start in mild winters.

Hazel (Corylus avellana): Yellow-green catkins, often starting late Dec in mild years.

2. Jan 21 – Feb 17: Hazel
Bloom Color: Yellow-green (long, dangling catkins).

Other Blooming Plants:
Snowdrop (Galanthus nivalis): White, peaking now.

Winter Aconite (Eranthis hyemalis): Yellow, small cup-shaped flowers, Jan-Feb.

Crocus (Crocus spp.): Purple, yellow, or white, early bloomers in late Jan.

3. Feb 18 – Mar 17: Elm
Bloom Color: Reddish-purple (small, clustered flowers before leaves).

Other Blooming Plants:
Crocus (Crocus spp.): Purple, yellow, or white, continuing into March.

Daffodil (Narcissus pseudonarcissus): Yellow with a white or orange center, starts late Feb.

Primrose (Primula vulgaris): Pale yellow, Feb-Apr, common in woodlands.

4. Mar 18 – Apr 14: Alder
Bloom Color: Yellow-brown (male catkins), red-purple (female cones before they turn woody).

Other Blooming Plants:
Daffodil (Narcissus pseudonarcissus): Yellow, peaking now.

Lesser Celandine (Ficaria verna): Bright yellow, star-shaped, Mar-May, loves damp spots.

Coltsfoot (Tussilago farfara): Yellow, dandelion-like, Mar-Apr, often on bare ground.

5. Apr 15 – May 12: Birch
Bloom Color: Yellow-green (long, drooping catkins).

Other Blooming Plants:
Bluebell (Hyacinthoides non-scripta): Deep blue, Apr-May, carpets woodlands.

Wood Anemone (Anemone nemorosa): White with a pinkish tint, Apr-May, forest floors.

Dandelion (Taraxacum officinale): Bright yellow, Apr-Jun, everywhere!

6. May 13 – Jun 9: Hawthorn
Bloom Color: White to pale pink (small, clustered flowers, often called "May blossom").

Other Blooming Plants:
Buttercup (Ranunculus repens): Glossy yellow, May-Jul, meadows and lawns.

Red Campion (Silene dioica): Pink-red, May-Aug, woodland edges.

Cow Parsley (Anthriscus sylvestris): White, lacy umbels, May-Jun, hedgerows.

7. Jun 10 – Jul 7: Elder
Bloom Color: Creamy white (flat clusters of tiny flowers).

Other Blooming Plants:
Foxglove (Digitalis purpurea): Purple-pink (sometimes white), Jun-Aug, woodlands.

Meadowsweet (Filipendula ulmaria): Creamy white, Jun-Aug, damp meadows.

Dog Rose (Rosa canina): Pale pink to white, Jun-Jul, hedgerows.

8. Jul 8 – Aug 4: Lime (Linden)
Bloom Color: Pale yellow to creamy white (small, fragrant flowers).

Other Blooming Plants:
Harebell (Campanula rotundifolia): Delicate blue, Jul-Sep, grassy areas.

Knapweed (Centaurea nigra): Purple, Jul-Sep, meadows.

Ragwort (Jacobaea vulgaris): Bright yellow, Jul-Aug, fields and roadsides.

9. Aug 5 – Sep 1: Bramble (Blackberry)
Bloom Color: White to pale pink (small, five-petaled flowers).

Other Blooming Plants:
Heather (Calluna vulgaris): Purple-pink, Aug-Sep, bogs and moors.

Yarrow (Achillea millefolium): White or pink, Jul-Sep, grasslands.

Devil’s-bit Scabious (Succisa pratensis): Purple-blue, Aug-Oct, damp meadows.

10. Sep 2 – Sep 29: Ivy
Bloom Color: Greenish-yellow (small, clustered flowers, not showy but vital for pollinators).

Other Blooming Plants:
Gorse (Ulex europaeus): Yellow, can bloom again in autumn.

Michaelmas Daisy (Aster spp., naturalized): Purple or white, Sep-Oct, gardens and wild patches.

Autumn Hawkbit (Scorzoneroides autumnalis): Yellow, Aug-Oct, grassy areas.

11. Sep 30 – Oct 27: Reed
Bloom Color: Purple-brown (feathery flower heads, turning silvery as they age).

Other Blooming Plants:
Sea Aster (Tripolium pannonicum): Pale purple with yellow centers, Sep-Oct, coastal marshes.

Goldenrod (Solidago virgaurea): Yellow, Aug-Oct, woodlands and cliffs.

Ivy (Hedera helix): Greenish-yellow, continuing into October.

12. Oct 28 – Nov 24: Spindle
Bloom Color: No blooms (blooms May-Jun), but pink capsules with orange seeds in autumn.

Other Blooming Plants:
Gorse (Ulex europaeus): Yellow, sporadic blooms.

Hogweed (Heracleum sphondylium): White, late stragglers into Oct-Nov.

Very few flowers bloom this late—focus shifts to berries and foliage.

13. Nov 25 – Dec 22: Yew
Bloom Color: No blooms (blooms Mar-Apr), but red berries (arils) on female trees in winter.

Other Blooming Plants:
Winter Heliotrope (Petasites fragrans): Pink-purple, starting again.

Gorse (Ulex europaeus): Yellow, continuing in mild weather.

Mostly evergreen foliage and berries dominate now.

Final Thoughts
Jaunir and January: The connection is symbolic, not etymological, but Gorse’s yellow blooms in January make it a fitting poetic link.

Gorse and Жёлтый: Not cognates, but Gorse’s yellow flowers create a cultural resonance with "yellow."

Statistics Simplified: Think of it as a game of chance—4/13 matches are like guessing a few birthdays right (very possible), while 6/13 is like guessing more than expected (less likely, but still possible).

Expanded Calendar: The calendar now includes bloom colors and a variety of other flowers, painting a vivid picture of Ireland’s seasonal cycles.

You’re welcome—I’ve enjoyed this journey! Would you like to explore the cultural significance of any of these plants further, like Gorse’s role in Irish folklore?

He placed Yew at the December, in accord with the final letter of classic ogham ᚔ[i] standing for Yew and with ᛦ[y] standing for Death (yew is poisonous) standing last in Younger Futhark to Medieval Futhark.

Let's use the help from that friend, and build a blooming calendar we were looking for:

1. Dec 24 – Jan 20: Gorse

Probably, russian words жёлтый и горький are cognates of gorse, and they also meet in желчь.

2. Jan 21 – Feb 17: Hazel

Witch hazel flowers open on warmish winted days - midday is a tiny bit above freezing.
(photographed on February 18, 2023)
and orange after yellow is very promising

3. Feb 18 – Mar 17: Elm
Elm flowers open in March and sometimes as early as February.

some pink is added to its orange, nice sequence (though they vary to more reddish hues too)

4. Mar 18 – Apr 14: Alder

I took this one, because it's further into orange-to-red, but it goes all the way to purple, and beyond.
And further there's no rainbowish correlation across that thing, so I drop this madness.

5. Apr 15 – May 12: Birch

Birch after Alder is very promising. Especially since year began at March
6. May 13 – Jun 9: Hawthorn


7. Jun 10 – Jul 7: Elder

(в огороде бузина, а в Киеве дядька - оба переводятся как elder)

8. Jul 8 – Aug 4: Lime (Linden)


9. Aug 5 – Sep 1: Bramble (Blackberry)
The flowers bloom from May to August. (such wide range hardly allows to place it here)

So I asked Grok to recompose the calendar so that the plants stick to their months.
And it offered quite different set:

Dec 24 – Jan 20: Winter Heliotrope (pale pink-purple)

Jan 21 – Feb 17: Snowdrop (white)

Feb 18 – Mar 17: Coltsfoot (bright yellow)

Mar 18 – Apr 14: Lesser Celandine (glossy yellow)

Apr 15 – May 12: Bluebell (deep blue)

May 13 – Jun 9: Cow Parsley (white)

Jun 10 – Jul 7: Dog Rose (pale pink to white)

Jul 8 – Aug 4: Harebell (delicate blue)

Aug 5 – Sep 1: Devil’s-bit Scabious (purple-blue)

Sep 2 – Sep 29: Autumn Hawkbit (yellow)

Sep 30 – Oct 27: Sea Aster (pale purple with yellow centers)

Oct 28 – Nov 24: Spindle (pink capsules, orange seeds)

Nov 25 – Dec 22: Yew (red berries)

But then I really liked Gorse for January, and I dropped it and I asked it to play along with A for Alder and B for Birch, and here's the delivery:

Month 1: Mar 20 – Apr 16 (A – Alder)

Month 2: Apr 17 – May 14 (B – Bluebell)

Month 3: May 15 – Jun 11 (C – Cow Parsley)

Month 4: Jun 12 – Jul 9 (D – Dog Rose)

Month 5: Jul 10 – Aug 6 (E – Elder)

Month 6: Aug 7 – Sep 3 (F – Foxglove)

Month 7: Sep 4 – Oct 1 (G – Goldenrod)

Month 8: Oct 2 – Oct 29 (H – Heather)

Month 9: Oct 30 – Nov 26 (I – Ivy)

Month 10: Nov 27 – Dec 24 (J – Juniper, symbolic)

Month 11: Dec 25 – Jan 21 (K – Knapweed, late bloomers)

Month 12: Jan 22 – Feb 18 (L – Lesser Celandine, early bloomers)

Month 13: Feb 19 – Mar 18 (M – Meadowsweet, late stragglers)

but the blooming dates didn't match, so we talked and talked, and it itself decided to rearange the oghamic calendar so that it fits, I don't know how much it fits, but either way here it is, this subject took too much of time and energy today already:

Final Calendar (Ogham Plants, Blooming-Focused, Starting March 20)
Mar 20 – Apr 16: Fearnóg (Alder) – ᚃ
Bloom Period: March–April (yellow-brown catkins).

Bloom Color: Yellow-brown.

Fit: Perfect match.

Other Blooming Plants:
Grán Arcáin (Lesser Celandine): Glossy yellow.

Lus an Chromchinn (Daffodil): Yellow.

Apr 17 – May 14: Beith (Birch) – ᚁ
Bloom Period: April–May (yellow-green catkins).

Bloom Color: Yellow-green.

Fit: Perfect match.

Other Blooming Plants:
Cloigín Gorm (Bluebell): Deep blue.

Fuinseog (Ash): Purple-green.

May 15 – Jun 11: Luis (Rowan) – ᚂ
Bloom Period: May–June (white).

Bloom Color: White.

Fit: Good match.

Other Blooming Plants:
Sceach Gheal (Hawthorn): White to pale pink.

Peirsil Bhó (Cow Parsley): White.

Jun 12 – Jul 9: Sceach Gheal (Hawthorn) – ᚆ
Bloom Period: May–June (white to pale pink).

Bloom Color: White to pale pink.

Fit: Good match—extends into early July.

Other Blooming Plants:
Ruis (Elder): Creamy white.

Rós Fiáin (Dog Rose): Pale pink to white.

Jul 10 – Aug 6: Ruis (Elder) – ᚏ
Bloom Period: June–July, sometimes into early August (creamy white).

Bloom Color: Creamy white.

Fit: Good match.

Other Blooming Plants:
Ur (Heather): Purple-pink.

Slat Óir (Goldenrod): Yellow.

Aug 7 – Sep 3: Ur (Heather) – ᚒ
Bloom Period: July–September (purple-pink).

Bloom Color: Purple-pink.

Fit: Perfect match.

Other Blooming Plants:
Lus na mBan Sí (Foxglove): Purple-pink.

Ngetal (Reed): Purple-brown.

Sep 4 – Oct 1: Ngetal (Reed) – ᚍ
Bloom Period: August–October (purple-brown).

Bloom Color: Purple-brown.

Fit: Perfect match.

Other Blooming Plants:
Gort (Ivy): Greenish-yellow.

Slat Óir (Goldenrod): Yellow.

Oct 2 – Oct 29: Gort (Ivy) – ᚌ
Bloom Period: September–November (greenish-yellow).

Bloom Color: Greenish-yellow.

Fit: Perfect match.

Other Blooming Plants:
Ngetal (Reed): Purple-brown.

Ur (Heather): Purple-pink, late bloomers.

Oct 30 – Nov 26: Iodhadh (Yew) – ᚔ
Seasonal Presence: Red berries, evergreen foliage (blooms March–April).

Fit: Symbolic—berries are prominent in autumn.

Other Blooming Plants:
Onn (Gorse): Yellow.

Gort (Ivy): Greenish-yellow, late bloomers.

Nov 27 – Dec 24: Onn (Gorse) – ᚑ
Bloom Period: Year-round, with winter blooms in November–December (yellow).

Bloom Color: Bright yellow.

Fit: Good match.

Other Blooming Plants:
Plúirín Sneachta (Snowdrop): White, starting late December.

Dec 25 – Jan 21: Coll (Hazel) – ᚉ
Bloom Period: January–March (yellow-green catkins).

Bloom Color: Yellow-green.

Fit: Good match—starts blooming in late December.

it is still not quite there: it tells that it is a good match, that it starts blooming in late December, but other sources tell..  Hazel flowers in February before the leaves appear
and there's also this:
A native Irish tree, once believed to be the tree of knowledge, Corylus avellana is a large, deciduous shrub or small tree with a spreading, bushy habit.
The Tree of Knowledge, huh! Witch Hazel, duh
and Grok continues:

Other Blooming Plants:
Plúirín Sneachta (Snowdrop): White.

Onn (Gorse): Yellow.

Jan 22 – Feb 18: Saille (Willow) – ᚄ
Bloom Period: March–May (yellow catkins).

Bloom Color: Yellow.

Fit: Poor match—blooms too late (we’ll note this as symbolic).

Other Blooming Plants:
Plúirín Sneachta (Snowdrop): White.

Coll (Hazel): Yellow-green catkins.

Feb 19 – Mar 18: Fuinseog (Ash) – ᚅ
Bloom Period: April–May (purple-green).

Bloom Color: Purple-green.

Fit: Poor match—blooms too late (symbolic).

Other Blooming Plants:
Grán Arcáin (Lesser Celandine): Glossy yellow.

Lus an Chromchinn (Daffodil): Yellow.