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When to Plant Asparagus in Dillingham Census Area, AK

Asparagus is a long-lived perennial vegetable that produces tender spears each spring for 15-20 years once established. It requires patience but rewards with reliable harvests.

Dillingham Census Area, Alaska is in USDA Zone 3a. The average last spring frost is May 1 and the first fall frost is September 6, giving you a growing season of approximately 128 days.

At an elevation of 410 feet, Dillingham Census Area receives approximately 54 inches of rainfall annually with predominantly silt loam soil. Summer highs average 60ยฐF, so choose short-season varieties of Asparagus to ensure they mature before fall. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Asparagus root diseases.

Dillingham Census Area, AK (Zone 3a) Short season
128 days
Last Spring Frost May 1
128 growing days
First Fall Frost September 6

Dillingham Census Area Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 29
Recommended (50%) ✓ Fits season
Transplant: Apr 29
Safe Start (90%) ✓ Fits season
Transplant: Apr 29

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 Dillingham Census Area

How your county's soil matches Asparagus's growing requirements.

Soil pH

Your soil pH (5.0โ€“6.2) is more acidic than Asparagus prefers (6.5โ€“7.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Dillingham Census Area is excellent for Asparagus โ€” good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Asparagus.

Organic Matter

Organic matter is excellent (6.6%) โ€” Asparagus will thrive.

How to Plant Asparagus

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Asparagus needs ~0 GDD — county provides 0 GDD May not mature

Asparagus Planting Timeline โ€” Dillingham Census Area, AK

Asparagus Planting Calendar

Activity When Date Range
Transplant Outdoors May 15 May 15 โ€“ May 29

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June โ€”
July โ€”
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.8"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

730โ€“1095 days

๐Ÿงช Soil pH

Needs 6.5โ€“7.5 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 3a

๐Ÿ“† Growing Season

128 days in Dillingham Census Area

Growing Tips for Asparagus in Dillingham Census Area

Your 128.0-day growing season in Dillingham Census Area is tight for Asparagus (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant crowns in deep trenches with compost. Do not harvest spears for the first two years to allow root establishment. Mulch heavily to suppress weeds and retain moisture.

Companion Planting

Good Companions

Avoid Planting Near

  • Garlic
  • Onion

Level Up Your Garden

Frequently Asked Questions

When should I plant Asparagus in Dillingham Census Area, AK?

Dillingham Census Area is in Zone 3a with an average last frost of May 1. Plan your Asparagus planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Dillingham Census Area, AK?

Dillingham Census Area, Alaska is in USDA Hardiness Zone 3a. The average last spring frost is May 1 and first fall frost is September 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Dillingham Census Area gardeners in Zone 3a organize planting dates, track what's growing, and never miss a planting window.

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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 Dillingham Census Area, AK. Local conditions may vary. Last updated: April 2026.