Lawn Guardian

When to Plant Stevia

Stevia rebaudiana

herbZones 9–12intermediate

Natural sugar substitute herb with leaves 30 times sweeter than sugar. Tropical perennial grown as annual in most zones. Dry leaves to use as sweetener year-round.

Planting calendar

Start seeds indoors

8 weeks before your last spring frost.

Direct sow / transplant

3 weeks after your last spring frost.

Slow to germinate; nursery plants easier; grow as annual in zones below 9; bring indoors in winter

Spacing & harvest

Get stevia planting dates for your exact zone

Lawn Guardian turns this guidance into a schedule timed to your USDA zone and this week's actual weather — and adapts every time you log what you've done.

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Sources: Purdue University Turfgrass Science: Use Growing Degree Days to Better Time Your Applications · University of Missouri Extension: Cool-Season Grasses: Lawn Maintenance Calendar · University of Minnesota Extension: Pre-emergent Herbicides for Crabgrass Control in Lawns