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When to Plant Fennel (herb) in Yakutat City and Borough, AK

Yakutat City and Borough, Alaska Zone 6b May

This month in Yakutat City and Borough, Alaska

Here's what deserves your attention in Yakutat City and Borough, Alaska this month. Everything below is tailored to Zone 6b and timed around your local frost dates.

Avg. last frost May 20
Avg. first frost September 25
Soil temp (4") 62°F
Watering High
Pest pressure Low
Daylight 16.7 hrs
  1. Time to transplant fennel (herb)

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

  2. Put fennel (herb) seeds straight in the ground

    These tolerate cool soil, so you're not gambling by sowing now.

To set up a strong June, finish these tasks
  • Starting indoors: fennel (herb)

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Herb fennel is grown for its aromatic leaves, stalks, and seeds rather than a bulb. It has a strong anise flavor and its flowers attract beneficial insects.

Yakutat City and Borough, Alaska is in USDA Zone 6b. The average last spring frost is May 20 and the first fall frost is September 25, giving you a growing season of approximately 128 days.

At an elevation of 246 feet, Yakutat City and Borough receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 66°F, so choose short-season varieties of Fennel (herb) to ensure they mature before fall.

Yakutat City and Borough, AK (Zone 6b) Short season
128 days
Last Spring Frost May 20
128 growing days
First Fall Frost September 25

Yakutat City and Borough Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 10 Transplant: May 8 🍅 Harvest: Jul 10 – Sep 18
Recommended (50%) ✓ Fits season (2 days to spare)
Start indoors: Apr 15 Transplant: May 13 🍅 Harvest: Jul 15 – Sep 23
Safe Start (90%) ✗ May not fit
Start indoors: Apr 27 Transplant: May 25 🍅 Harvest: Jul 27 – Oct 5

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Yakutat City and Borough

How your county's soil matches Fennel (herb)'s growing requirements.

Soil pH

Your soil pH (5.2–6.3) overlaps with Fennel (herb)'s range (5.5–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Yakutat City and Borough is excellent for Fennel (herb) — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Fennel (herb).

Organic Matter

Organic matter is excellent (5.1%) — Fennel (herb) will thrive.

How to Plant Fennel (herb)

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Fennel (herb)

2
successive plantings in your 128-day season

Sow every 6.9 weeks. Last sowing by Jun 27 to harvest before frost.

For a dedicated fall crop, sow by Jul 17.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.3″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Fennel (herb)

Fennel (herb) needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Fennel (herb) Needs Rainfall You Supplement Action
Jan 2.2" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 1.6" 0" ❄️ Dormant
Apr 1.3" 0" ❄️ Dormant
May 4.3" 2" 2.3" 🚿 Regular watering
Jun 4.3" 2.7" 1.6" 💧 Light watering
Jul 4.3" 5.1" 0" ✅ Rainfall sufficient
Aug 4.3" 6.8" 0" ✅ Rainfall sufficient
Sep 4.3" 7.5" 0" ✅ Rainfall sufficient
Oct 4.3" 0" ❄️ Dormant
Nov 3.1" 0" ❄️ Dormant
Dec 2.2" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Yakutat City and Borough). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Fennel (herb) Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Fennel (herb) needs ~0 GDD — county provides 0 GDD May not mature

Fennel (herb) Planting Timeline — Yakutat City and Borough, AK

Fennel (herb) Planting Calendar

Activity When Date Range
Start Indoors April 15 Apr 15 – Apr 29
Transplant Outdoors May 13 May 13 – May 27
Direct Sow May 6 May 6 – May 27
Harvest July 15 Jul 15 – Sep 23
Fall Sowing July 17 Jul 17 – Jul 31

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Start Indoors
May Transplant Outdoors Direct Sow
June
July Fall Sowing Harvest
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

128 days in Yakutat City and Borough

Growing Tips for Fennel (herb) in Yakutat City and Borough

Direct sow Fennel (herb) outdoors after May 20 in Yakutat City and Borough when soil has warmed and frost danger has passed.

Common pests for Fennel (herb) in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in spring or fall. Unlike Florence fennel, herb fennel does not form a bulb. Harvest fronds as needed and seeds when they turn brown. Self-sows readily.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Peppers
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fennel (herb) in Yakutat City and Borough, AK?

Yakutat City and Borough is in Zone 6b with an average last frost of May 20. Plan your Fennel (herb) planting based on this frost date — see the calendar above for exact timing.

What planting zone is Yakutat City and Borough, AK?

Yakutat City and Borough, Alaska is in USDA Hardiness Zone 6b. The average last spring frost is May 20 and first fall frost is September 25.

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Your Yakutat City and Borough Garden Planner — Free

A 24-page printable planner built for Yakutat City and Borough (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Yakutat City and Borough, AK. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.