Growing Lavender in St. Louis
🇺🇸 Zone 4 Planting Guide · Humid subtropical climate
Quick Answer: Growing Lavender in St. Louis
Yes, you can grow Lavender in St. Louis, US! Plant during Feb, Mar, Apr, Aug, Sep for best results. St. Louis is in USDA Zone 4 with a Humid subtropical climate, offering 210 frost-free days per year. The difficulty level is medium, and Lavender takes 90-200 days to harvest. Lavender needs full sun and low watering.
Climate Match Analysis
St. Louis's temperatures (-6°C to 32°C) are within the tolerable range for Lavender (-10°C to 35°C), though not always in the optimal zone (15°C to 28°C). Plant during recommended months for best results.
St. Louis Climate Data
Lavender Planting Calendar for St. Louis
Green months show the best time to plant Lavender in St. Louis
Lavender Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Low
Drought tolerant, water sparingly
Days to Harvest
90-200
From planting to first harvest
Difficulty
Some experience helpful
💡 Growing Tips for Lavender
Must have excellent drainage -- will rot in wet soil. Prune after flowering. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.
Frost tolerance: Lavender is frost tolerant — you can plant earlier in spring.
Companion Plants for Lavender
Find out which plants grow best alongside Lavender — and which to keep apart
Grow Lavender Indoors
No garden? Learn how to grow Lavender indoors with our complete guide
How to Grow Lavender in St. Louis
St. Louis, US is in USDA Hardiness Zone 4 with a Humid subtropical climate (Köppen Cfa). With winter lows of -6°C and summer highs of 32°C, the growing season spans approximately 210 frost-free days. Lavender grows well with some gardening knowledge in this climate.
Lavender thrives in temperatures between 15°C and 28°C, requiring full sun and low watering. In St. Louis, the best months to plant Lavender are February, March, April, August, September. Since Lavender can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 90-200 days after planting.
St. Louis receives 1016mm of annual rainfall, which provides good natural moisture for Lavender. Be careful not to overwater — the natural rainfall may be sufficient.
Other Plants That Grow in St. Louis
More plants you can grow alongside Lavender in St. Louis
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Frequently Asked Questions
Can I grow lavender in St. Louis?
Yes! Lavender can be successfully grown in St. Louis, US. St. Louis is in USDA Hardiness Zone 4 with a Humid subtropical climate. The difficulty level for growing Lavender here is rated "medium". The best months to plant are February, March, April, August, September.
When should I plant lavender in St. Louis?
In St. Louis, the recommended planting months for Lavender are February, March, April, August, September. St. Louis has 210 frost-free days per year, with winter lows of -6°C and summer highs of 32°C. Lavender is frost tolerant, giving you more flexibility with planting dates.
How long does lavender take to grow in St. Louis?
Lavender typically takes 90-200 days from planting to harvest. In St. Louis's Humid subtropical climate with 210 frost-free days, you have plenty of time to grow Lavender to maturity. Must have excellent drainage -- will rot in wet soil. Prune after flowering. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Overwatering is the most common mistake. Let soil dry out between waterings and ensure drainage is excellent.
Can I grow lavender indoors in St. Louis?
Lavender can potentially be grown indoors in St. Louis with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Feb, Mar, Apr, Aug, Sep outdoor planting window. Use containers with good drainage and low watering.
What month do I plant lavender in St. Louis?
Plant Lavender in St. Louis during February, March, April, August, September. These are the optimal months based on St. Louis's USDA Zone 4 climate, 210 frost-free days, and temperature range of -6°C to 32°C.
Is lavender hard to grow in St. Louis?
Lavender is rated "medium" to grow in St. Louis. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Lavender in St. Louis is Good.
What grows well with lavender in St. Louis?
In St. Louis, you can grow many companion plants alongside Lavender. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in St. Louis's Zone 4 climate.
Does lavender need full sun in St. Louis?
Lavender requires full sun. In St. Louis, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.