Stevia Herb Seeds

About Stevia Herb Seeds

Stevia Herb Seeds grow in full shade, partial shade positions. Expect 12 inches at maturity. Flowering runs sumer through late fall. The figures below are the ones on the packets in this group; each product page carries the exact numbers for that variety.

When to plant

Plant in warm season. Start seed indoors and move the seedlings out once the danger of frost has passed. Hardy in zones 9 to 12 — your local frost dates decide the exact week.

Where to plant

Choose a site in full shade, partial shade. Water needs are average once the plants are established. Free-draining soil matters more than rich soil; seed sown into ground that stays wet rots before it germinates. Allow 12 inches between plants so air can move between them. Plan for 12 inches of growth when you place them in a bed or border.

How to plant

Sow 1/16 inch deep, spaced 12 inches apart. Water gently to settle the soil, then keep the surface evenly moist until seedlings or shoots appear. Indoor starts do best in warmth and bright light; harden the seedlings off over a week before planting out.

How to care

Keep watering average, at the base of the plant rather than over the leaves. In zones 9 to 12 these come back each year: let the foliage die down naturally after flowering, since that is what feeds next season's growth. Flowers appear sumer through late fall; cutting or deadheading regularly keeps more coming.

Find your growing zone All planting guides