Stevia Seeds
Stevia stems with various fruit drinks
Stevia stems with processed granules
Stevia growing in garden
Stevia leaves growing in garden
Stevia Seeds
Stevia stems with various fruit drinks
Stevia stems with processed granules
Stevia growing in garden
Stevia leaves growing in garden

Stevia Seeds

3.638 Reviews#HB175 · 15 seeds
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Description

(Stevia rebaudiana). A hard-to-find herb that is grown for the famous stevia leaves which, when dried, can be used to sweeten drinks and desserts. Stevia powder is reported to be 300 times sweeter than sugar! Not winter hardy, except in zones 8-10. From Brazil and Paraguay. Fun to grow!

Plant Details

Botanical Name
Stevia rebaudiana
Life Cycle
Perennial in zone 10 and higher
Sun Requirement
Full sun
Days to Germinate
7–21
Days to Maturity
90–120
Planting Depth
Surface sow
Plant Spacing
12–18 in.
Ideal Temperature
70–85°F
Frost Hardy
No

Growing Guide

When to Grow

Start seeds indoors 8 to 10 weeks before your area’s last expected frost date. Transplant outdoors after danger of frost has passed. In warmer zones, Stevia can be grown year-round. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Sow Stevia seeds on the surface of a moist seed-starting mix. Press in gently for good soil contact. Light is required for germination. Maintain consistent warmth (around 75°F) and cover trays with a humidity dome or plastic wrap until sprouting occurs.

How to Grow

Once seedlings have at least two sets of true leaves, transplant them into larger pots or directly into the garden after hardening off after the last frost. Choose a sunny location and amend soil with compost for better nutrient retention. Water regularly, but avoid waterlogging. Pinch growing tips for a fuller shape.

How to Save Seeds

  • Allow plants to flower and go to seed in late summer or fall
  • Harvest seed heads when dry and brown, but before they scatter
  • Gently shake or crush heads to release seeds
  • Separate seeds from chaff by sifting or blowing lightly
  • Label and store seeds in a cool, dry, airtight container away from light

FAQ

Why won’t my Stevia seeds germinate?

Stevia seeds can be finicky, with low germination rates. Make sure they’re exposed to light, as they need it to sprout, and keep soil consistently warm and moist during germination.

Can I grow Stevia indoors year-round?

Yes, Stevia can be grown indoors in containers as long as it receives enough light—preferably from a south-facing window or under grow lights for 12–14 hours daily.

Is Stevia a perennial or an annual?

Stevia is a tender perennial in USDA zones 10–11 but is typically grown as an annual in cooler climates where it cannot survive frost. Indoors or in greenhouses, it may grow year-round.

Shop our stevia seeds.

Customer reviews

3.6 / 5 38 Reviews

What gardeners are saying

  • Mixed germination: Some sprout in days; others wait weeks or get none.

  • Heads up: Seedlings damp off easily; mist, don't drown, and be patient.

  • Intensely sweet leaves: Pick leaves small; big ones can turn bitter.

  • Overwinters indoors: Pots come inside for winter and bush out again in spring.

  • Loves full sun: Takes off in full sun once past the seedling stage.

More to grow!

See all Stevia Seeds