Growing Stevia in Seattle
🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Stevia in Seattle
Yes, you can grow Stevia in Seattle, US! Plant during Mar, Apr, May, Jun for best results. Seattle is in USDA Zone 7 with a Warm-summer Mediterranean climate, offering 250 frost-free days per year. The difficulty level is medium, and Stevia takes 60-90 days to harvest. Stevia needs full sun and regular watering.
Climate Match Analysis
Seattle's climate requires careful timing. Winter lows (2°C) drop below Stevia's minimum (10°C), so avoid cold months. Follow the recommended planting months for success.
Seattle Climate Data
Stevia Planting Calendar for Seattle
Green months show the best time to plant Stevia in Seattle
Stevia Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
60-90
From planting to first harvest
Difficulty
Some experience helpful
💡 Growing Tips for Stevia
Harvest leaves before flowering for best sweetness. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and invites root rot. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.
Frost tolerance: Stevia is NOT frost tolerant — wait until after the last frost in Seattle.
How to Grow Stevia in Seattle
Seattle, US is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate (Köppen Csb). With winter lows of 2°C and summer highs of 24°C, the growing season spans approximately 250 frost-free days. Stevia grows well with some gardening knowledge in this climate.
Stevia thrives in temperatures between 18°C and 28°C, requiring full sun and regular watering. In Seattle, the best months to plant Stevia are March, April, May, June. Stevia is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 60-90 days after planting.
With 953mm of annual rainfall, Seattle provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.
Other Plants That Grow in Seattle
More plants you can grow alongside Stevia in Seattle
Keep Exploring
Frequently Asked Questions
Can I grow stevia in Seattle?
Yes! Stevia can be successfully grown in Seattle, US. Seattle is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate. The difficulty level for growing Stevia here is rated "medium". The best months to plant are March, April, May, June.
When should I plant stevia in Seattle?
In Seattle, the recommended planting months for Stevia are March, April, May, June. Seattle has 250 frost-free days per year, with winter lows of 2°C and summer highs of 24°C. Since Stevia is not frost tolerant, make sure to plant after the last frost date.
How long does stevia take to grow in Seattle?
Stevia typically takes 60-90 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Stevia to maturity. Harvest leaves before flowering for best sweetness. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and invites root rot. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.
Can I grow stevia indoors in Seattle?
Stevia can potentially be grown indoors in Seattle 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 Mar, Apr, May, Jun outdoor planting window. Use containers with good drainage and regular watering.
What month do I plant stevia in Seattle?
Plant Stevia in Seattle during March, April, May, June. These are the optimal months based on Seattle's USDA Zone 7 climate, 250 frost-free days, and temperature range of 2°C to 24°C.
Is stevia hard to grow in Seattle?
Stevia is rated "medium" to grow in Seattle. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Stevia in Seattle is Moderate.
What grows well with stevia in Seattle?
In Seattle, you can grow many companion plants alongside Stevia. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Seattle's Zone 7 climate.
Does stevia need full sun in Seattle?
Stevia requires full sun. In Seattle, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.