Tender Perennial Herbs | How to Garden

How to Grow Stevia

Here are the requirements for growing stevia from seed:

Seed soaking: Stevia seeds do not require soaking before planting.
Germination requirements: Stevia seeds require light to germinate, so do not cover them deeply with soil.
Seed planting depth: Plant stevia seeds 0-1/8 inch deep in well-draining soil.
Temperature range for germination: Stevia seeds germinate best at temperatures between 70-75°F (21-24°C).
Days until germination: Stevia seeds typically germinate within 7-14 days.
Indoor vs outdoor planting: Stevia can be started indoors 8-10 weeks before the last frost date or sown directly outside after the danger of frost has passed.
USDA hardiness zone and frost hardiness: Stevia is hardy in USDA zones 9-11 and can be damaged by frost.
Annual vs perennial: Stevia is a perennial herb in warmer climates and an annual in colder climates.
Seed spacing and thinning: Plant stevia seeds about 18-24 inches apart and thin to one plant per pot or 24-36 inches apart in the garden.
Plant spacing: Space stevia plants 24-36 inches apart in the garden.
Sunlight requirements: Stevia requires full sun to partial shade and 6-8 hours of direct sunlight per day.
Height range for mature plants: Stevia can grow up to 3 feet tall.
Transplanting: Transplant stevia seedlings outside after the danger of frost has passed and the soil has warmed up.
Flowering: Stevia produces small, white flowers in late summer or early fall, but it is primarily grown for its sweet leaves.

Seed soaking: Marjoram seeds do not require soaking before planting.
Germination requirements: Marjoram seeds require light to germinate, so do not cover them with soil, or plant marjoram seeds about 1/8 inch deep in well-draining soil.
Temperature range for germination: Marjoram seeds germinate best at temperatures between 60-70°F (15-21°C).
Days until germination: Marjoram seeds typically germinate within 7-14 days.
Indoor vs outdoor planting: Marjoram can be started indoors 6-8 weeks before the last frost date or sown directly outside after the danger of frost has passed.
USDA hardiness zone and frost hardiness: Marjoram is hardy in USDA zones 6-9 and can withstand light frost.
Annual vs perennial: Marjoram is a perennial herb in warmer climates and an annual in colder climates.
Seed spacing and thinning: Plant marjoram seeds about 8-10 inches apart and thin to one plant per pot or 12-18 inches apart in the garden.
Plant spacing: Space marjoram plants 12-18 inches apart in the garden.
Sunlight requirements: Marjoram requires full sun and 6-8 hours of direct sunlight per day.
Height range for mature plants: Marjoram can grow up to 2 feet tall.
Transplanting: Transplant marjoram seedlings outside after the danger of frost has passed and the soil has warmed up.
Flowering: Marjoram produces small, white or pink flowers in mid to late summer.

Soak lemongrass seeds in warm water for 24 hours before planting.
Lemongrass seeds require light to germinate, so do not cover them with soil.
Lemongrass seeds germinate best at temperatures between 70-75°F (21-24°C).
Lemongrass seeds typically germinate within 7-21 days.
Lemongrass can be started indoors 6-8 weeks before the last frost date or sown directly outside after the danger of frost has passed.
Lemongrass is hardy in USDA zones 9-11 and can withstand light frost. It is a perennial grass that can be grown as an annual in colder climates.
Plant lemongrass seeds about 6 inches apart and thin to one plant per pot or 3-4 feet apart in the garden.
Space lemongrass plants 3-4 feet apart in the garden.
Lemongrass requires full sun and 6-8 hours of direct sunlight per day.
Lemongrass can grow up to 6 feet tall.
Transplant lemongrass seedlings outside after the danger of frost has passed and the soil has warmed up.
Lemongrass produces small, cream-colored flowers in late summer or early fall.