Blog

When to Plant Kai Lan in Borden County, TX

Borden County, Texas Zone 8a May

Top priorities for Borden County, Texas gardeners in May

Here's what deserves your attention in Borden County, Texas this month. Everything below is tailored to Zone 8a and timed around your local frost dates.

Avg. last frost March 29
Avg. first frost November 11
Soil temp (4") 59°F
Watering Critical
Pest pressure Moderate
Daylight 13.7 hrs
  1. Start kai lan under lights

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

  2. Collect kai lan at their peak

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

Get ahead of June
  • First harvests: kai lan

Instant PDF download. No spam, unsubscribe any time.

Kai lan (Chinese broccoli) is a brassica grown for its thick, glossy stems and small flower buds. It has a slightly bitter, broccoli-like flavor essential in Cantonese cooking.

Borden County, Texas is in USDA Zone 8a. The average last spring frost is March 29 and the first fall frost is November 11, giving you a growing season of approximately 227 days.

At an elevation of 4,231 feet, Borden County receives approximately 47.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 101°F, so Kai Lan may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Kai Lan will need more frequent watering and organic matter to retain nutrients.

Borden County, TX (Zone 8a) Long season
227 days
Last Spring Frost March 29
227 growing days
First Fall Frost November 11
Share this guide:

Borden County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.5-8.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (148 days to spare)
Start indoors: Feb 15 Transplant: Mar 22 🍅 Harvest: May 10 – Jun 7
Recommended (50%) ✓ Fits season (150 days to spare)
Start indoors: Feb 22 Transplant: Mar 29 🍅 Harvest: May 17 – Jun 14
Safe Start (90%) ✓ Fits season (146 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jun 3 – Jul 1

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 Borden County

How your county's soil matches Kai Lan's growing requirements.

Soil pH

Your soil pH (7.5–8.7) is more alkaline than Kai Lan prefers (6.0–7.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Borden County warms quickly in spring but drains fast. Kai Lan will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.0%). Add 2-3 inches of compost before planting Kai Lan.

How to Plant Kai Lan

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Kai Lan

6
successive plantings in your 227-day season

Sow every 5.1 weeks. Last sowing by Sep 12 to harvest before frost.

For a dedicated fall crop, sow by Sep 02.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 303 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Kai Lan

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

Month Kai Lan Needs Rainfall You Supplement Action
Jan 3.1" 0" ❄️ Dormant
Feb 2.4" 0" ❄️ Dormant
Mar 4.3" 2.6" 1.7" 💧 Light watering
Apr 4.3" 1.8" 2.5" 🚿 Regular watering
May 4.3" 1.2" 3.1" 🚿 Regular watering
Jun 4.3" 1.8" 2.5" 🚿 Regular watering
Jul 4.3" 7.2" 0" ✅ Rainfall sufficient
Aug 4.3" 9.1" 0" ✅ Rainfall sufficient
Sep 4.3" 7.2" 0" ✅ Rainfall sufficient
Oct 4.3" 4.7" 0" ✅ Rainfall sufficient
Nov 4.3" 2.7" 1.6" 💧 Light watering
Dec 3.5" 0" ❄️ Dormant

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

Kai Lan 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.

Kai Lan needs ~1,352 GDD — county provides 5,845 GDD Excellent fit

Kai Lan Planting Timeline — Borden County, TX

Kai Lan Planting Calendar

Activity When Date Range
Start Indoors February 22 Feb 22 – Mar 8
Transplant Outdoors March 29 Mar 29 – Apr 12
Direct Sow March 15 Mar 15 – Apr 5
Harvest May 17 May 17 – Jun 14
Fall Sowing September 2 Sep 2 – Sep 16

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8a

📆 Growing Season

227 days in Borden County

Growing Tips for Kai Lan in Borden County

Direct sow Kai Lan outdoors after March 29 in Borden County when soil has warmed and frost danger has passed.

Sandy soil in Borden County dries quickly — mulch Kai Lan with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 101°F in Borden County, provide afternoon shade for Kai Lan and water deeply in the morning.

Your generous 227.0-day season in Borden County allows multiple plantings of Kai Lan. Sow every 22.0 days for continuous harvest.

Common pests for Kai Lan 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. Harvest when flower buds first appear but before they open. Cut stems at the base to encourage side shoots. Prefers cool weather.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Kai Lan in Borden County, TX?

Borden County is in Zone 8a with an average last frost of March 29. Plan your Kai Lan planting based on this frost date — see the calendar above for exact timing.

What planting zone is Borden County, TX?

Borden County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 29 and first fall frost is November 11.

🌱

Your Borden County Garden Planner — Free

A 24-page printable planner built for Borden County (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 Borden County, TX. 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.