When to Plant Lavender in La Salle County, TX
Top priorities for La Salle County, Texas gardeners in May
May is a pivotal month for La Salle County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Collect lavender at their peak
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
June will be here before you know it — start on
- First harvests: lavender
Lavender is a fragrant perennial herb with silvery foliage and purple flower spikes. It is prized for its essential oils, culinary uses, and ornamental beauty.
La Salle County, Texas is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 3, giving you a growing season of approximately 292 days.
At an elevation of 2,270 feet, La Salle County receives approximately 57.2 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Lavender during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lavender root diseases.
La Salle County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.6
Drainage
Well Drained
Plant 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 La Salle County
How your county's soil matches Lavender's growing requirements.
Soil pH
Your soil pH (6.5–7.6) is within Lavender's preferred range (6.5–8.0).
Soil Texture
The loam soil in La Salle County is excellent for Lavender — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Lavender.
Organic Matter
Organic matter is moderate (2.0%). Annual compost additions will help Lavender.
How to Plant Lavender
Plant Water Budget
Monthly Watering Guide for Lavender
Lavender needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.
| Month | Lavender Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | 1.3" | 2" | 0" | ✅ Rainfall sufficient |
| Mar | 1.3" | 3.4" | 0" | ✅ Rainfall sufficient |
| Apr | 1.3" | 5.5" | 0" | ✅ Rainfall sufficient |
| May | 1.3" | 7.4" | 0" | ✅ Rainfall sufficient |
| Jun | 1.3" | 10.2" | 0" | ✅ Rainfall sufficient |
| Jul | 1.3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Aug | 1.3" | 7" | 0" | ✅ Rainfall sufficient |
| Sep | 1.3" | 5.8" | 0" | ✅ Rainfall sufficient |
| Oct | 1.3" | 3.6" | 0" | ✅ Rainfall sufficient |
| Nov | 1.3" | 2" | 0" | ✅ Rainfall sufficient |
| Dec | 1.3" | 1.6" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in La Salle County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Lavender 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.
Lavender Planting Timeline — La Salle County, TX
Lavender Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 21 | Feb 21 – Mar 7 |
| Harvest | May 23 | May 23 – Oct 24 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Transplant Outdoors |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.3"/week · Natural rainfall sufficient
📅 Days to Maturity
90–200 days
🧪 Soil pH
Needs 6.5–8 · Your soil: ideal
🗺️ USDA Zone
Zone 9a
📆 Growing Season
292 days in La Salle County
Growing Tips for Lavender in La Salle County
Direct sow Lavender outdoors after February 14 in La Salle County when soil has warmed and frost danger has passed.
With 57" of annual rainfall in La Salle County, ensure good drainage for Lavender — excess moisture can promote root rot and fungal diseases.
General growing tips
Plant in well-drained, sandy soil. Avoid heavy mulching around the crown. Prune after flowering but do not cut into old wood. Lavender resents wet winter conditions.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Lavender in Other Locations
Frequently Asked Questions
When should I plant Lavender in La Salle County, TX?
La Salle County is in Zone 9a with an average last frost of February 14. Plan your Lavender planting based on this frost date — see the calendar above for exact timing.
What planting zone is La Salle County, TX?
La Salle County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 3.
Your La Salle County Garden Planner — Free
A 24-page printable planner built for La Salle County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.