Blog

When to Plant Pac Choi in Alexandria City, VA

Alexandria City, Virginia Zone 8a May

May in the garden — Alexandria City, Virginia

We've pulled the most time-sensitive tasks for Alexandria City, Virginia this May and put them front and centre. Tackle them in order.

Avg. last frost April 6
Avg. first frost November 8
Soil temp (4") 68°F
Watering Moderate
Pest pressure Moderate
Daylight 14.1 hrs
  1. Start pac choi indoors

    Label every cell. You will absolutely forget which is which otherwise.

  2. Collect pac choi at their peak

    If you can't use it all right away, check the food-preservation section of your planner.

Looking ahead to June
  • First harvests: pac choi

Instant PDF download. No spam, unsubscribe any time.

Pac choi (baby bok choy) is a compact variety of Chinese cabbage with tender leaves and crisp stems. It grows quickly and is ideal for containers and small spaces.

Alexandria City, Virginia is in USDA Zone 8a. The average last spring frost is April 6 and the first fall frost is November 8, giving you a growing season of approximately 216 days.

At an elevation of 738 feet, Alexandria City receives approximately 45.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Pac Choi during the growing season.

Alexandria City, VA (Zone 8a) Long season
216 days
Last Spring Frost April 6
216 growing days
First Fall Frost November 8
Share this guide:

Alexandria City Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (141 days to spare)
Start indoors: Feb 20 Transplant: Mar 27 🍅 Harvest: May 8 – Jun 5
Recommended (50%) ✓ Fits season (146 days to spare)
Start indoors: Mar 2 Transplant: Apr 6 🍅 Harvest: May 18 – Jun 15
Safe Start (90%) ✓ Fits season (155 days to spare)
Start indoors: Mar 24 Transplant: Apr 28 🍅 Harvest: Jun 9 – Jul 7

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 Alexandria City

How your county's soil matches Pac Choi's growing requirements.

Soil pH

Your soil pH (5.8–6.8) overlaps with Pac Choi's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Alexandria City is excellent for Pac Choi — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Pac Choi.

How to Plant Pac Choi

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 Pac Choi

6
successive plantings in your 216-day season

Sow every 4.6 weeks. Last sowing by Sep 14 to harvest before frost.

For a dedicated fall crop, sow by Aug 30.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,172 gal / 100 sq ft

Monthly Watering Guide for Pac Choi

Pac Choi needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Pac Choi Needs Rainfall You Supplement Action
Jan 4.3" 0" ❄️ Dormant
Feb 3.4" 0" ❄️ Dormant
Mar 4.8" 0" ❄️ Dormant
Apr 6.5" 3.8" 2.7" 💧 Light watering
May 6.5" 3.7" 2.8" 💧 Light watering
Jun 6.5" 3.7" 2.8" 💧 Light watering
Jul 6.5" 4.9" 1.6" 💧 Light watering
Aug 6.5" 3.8" 2.7" 💧 Light watering
Sep 6.5" 3.4" 3.1" 💧 Light watering
Oct 6.5" 2.6" 3.9" 🚿 Regular watering
Nov 6.5" 3.4" 3.1" 💧 Light watering
Dec 4" 0" ❄️ Dormant

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

Pac Choi 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.

Pac Choi needs ~867 GDD — county provides 3,942 GDD Excellent fit

Pac Choi Planting Timeline — Alexandria City, VA

Pac Choi Planting Calendar

Activity When Date Range
Start Indoors March 2 Mar 2 – Mar 16
Transplant Outdoors April 6 Apr 6 – Apr 20
Direct Sow March 23 Mar 23 – Apr 13
Harvest May 18 May 18 – Jun 15
Fall Sowing August 30 Aug 30 – Sep 13

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

40–55 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

216 days in Alexandria City

Growing Tips for Pac Choi in Alexandria City

Direct sow Pac Choi outdoors after April 06 in Alexandria City when soil has warmed and frost danger has passed.

Your generous 216.0-day season in Alexandria City allows multiple plantings of Pac Choi. Sow every 20.0 days for continuous harvest.

Common pests for Pac Choi in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in spring or fall. Grows best in cool weather. Space 6 inches apart for baby pac choi. Harvest whole plants or cut outer leaves as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Pac Choi in Alexandria City, VA?

Alexandria City is in Zone 8a with an average last frost of April 6. Plan your Pac Choi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Alexandria City, VA?

Alexandria City, Virginia is in USDA Hardiness Zone 8a. The average last spring frost is April 6 and first fall frost is November 8.

🌱

Your Alexandria City Garden Planner — Free

A 24-page printable planner built for Alexandria City (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Alexandria City, VA. 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.