When to plant Pac Choi in Richland County County,
In Richland County County, plant Pac Choi in spring between May 7 and May 28, once soil temps hold above 50°F. Richland County County's last frost averages May 14, so be cautious and check the 10-day forecast before planting tender crops. For a fall crop, sow between June 28 and July 12 — roughly 55 days before the first frost on September 20.
When to Plant Pac Choi in Richland County, MT
June in the garden — Richland County, Montana
Your Richland County, Montana garden is entering a new phase. Here's what's on the schedule for June and why each task matters now.
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Fire up the seed-starting tray: pac choi
Label every cell. You will absolutely forget which is which otherwise.
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Harvest pac choi as they ripen
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
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Kick off the fall garden with pac choi
Mid-season soil is hot. Sow a bit deeper than the packet suggests to find cooler, damper ground.
Looking ahead to July
- First harvests: pac choi
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.
Richland County, Montana is in USDA Zone 4a. The average last spring frost is May 14 and the first fall frost is September 20, giving you a growing season of approximately 129 days.
At an elevation of 6,414 feet, Richland County receives approximately 13.6 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Pac Choi to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Pac Choi successfully. Mulch heavily to conserve soil moisture.
Richland County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.8
Drainage
Well Drained
Pac Choi Planting Risk Windows
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 Richland County
How your county's soil matches Pac Choi's growing requirements.
Soil pH
Your soil pH (6.5–7.8) overlaps with Pac Choi's range (6.0–7.5), though not a perfect match.
Soil Texture
The loam soil in Richland County is excellent for Pac Choi — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.3%). Annual compost additions will help Pac Choi.
How to Plant Pac Choi
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Succession Planting Pac Choi
Sow every 4.6 weeks. Last sowing by Jul 27 to harvest before frost.
For a dedicated fall crop, sow by Jun 28.
Pac Choi Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
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 | — | 0.9" | 0" | ❄️ Dormant |
| Feb | — | 0.8" | 0" | ❄️ Dormant |
| Mar | — | 1.2" | 0" | ❄️ Dormant |
| Apr | — | 1.4" | 0" | ❄️ Dormant |
| May | 6.5" | 1.6" | 4.9" | 🚿 Regular watering |
| Jun | 6.5" | 1" | 5.5" | 🚿 Regular watering |
| Jul | 6.5" | 1" | 5.5" | 🚿 Regular watering |
| Aug | 6.5" | 1.6" | 4.9" | 🚿 Regular watering |
| Sep | 6.5" | 1.1" | 5.4" | 🚿 Regular watering |
| Oct | — | 1.2" | 0" | ❄️ Dormant |
| Nov | — | 1" | 0" | ❄️ Dormant |
| Dec | — | 0.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Richland County). 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 Planting Timeline — Richland County, MT
Pac Choi Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 2 | Apr 2 – Apr 16 |
| Transplant Outdoors | May 14 | May 14 – May 28 |
| Direct Sow | May 7 | May 7 – May 28 |
| Harvest | June 25 | Jun 25 – Jul 23 |
| Fall Sowing | June 28 | Jun 28 – Jul 12 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Fall Sowing Harvest |
| July | Fall Sowing Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1.5"/week · 2-3 times/week
📅 Days to Maturity
40–55 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 4a
📆 Growing Season
129 days in Richland County
Growing Tips for Pac Choi in Richland County
Direct sow Pac Choi outdoors after May 14 in Richland County when soil has warmed and frost danger has passed.
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.
Richland County receives only 14" of rain annually. Pac Choi needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
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
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Check more plant combinations with our Companion Planting Checker →
Pac Choi in Other Locations
Frequently Asked Questions
When should I plant Pac Choi in Richland County, MT?
Richland County is in Zone 4a with an average last frost of May 14. Plan your Pac Choi planting based on this frost date — see the calendar above for exact timing.
What planting zone is Richland County, MT?
Richland County, Montana is in USDA Hardiness Zone 4a. The average last spring frost is May 14 and first fall frost is September 20.
When should I plant Pac Choi in Richland County County, ?
In Richland County County, , plant Pac Choi after the last frost (around May 14) and before the first frost (around September 20). Best results when soil holds above 50°F.
What growing zone is Richland County County, for Pac Choi?
Richland County County sits in USDA Zone 4a. Pac Choi grows reliably in zones 2a through 11b, so it's a good fit here.
Can Pac Choi grow in Richland County County's climate?
Yes — Pac Choi grows well in Richland County County's temperate climate. Richland County County averages a 129-day frost-free season, with last frost around May 14 and first frost around September 20.
Your Richland County Garden Planner — Free
A 22-page printable planner built for Richland County (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.