How long until lavender is ready to harvest?

90-120 days. Harvest flower stems when bottom flowers are open and top buds are still closed; cut in morning after dew dries

Lawn Guardian

When to Plant Lavender

Lavandula angustifolia

herbZones 5–9intermediate

Fragrant perennial with purple flower spikes and silvery foliage. Culinary uses in baking, teas, and herb blends. Drought-tolerant pollinator magnet. English lavender is hardiest.

Planting calendar

Start seeds indoors

10 weeks before your last spring frost.

Slow and difficult from seed; nursery plants recommended; needs excellent drainage; perennial in zones 5-9

Spacing & harvest

Plant spacing: 12-18 inches
Row spacing: 18-24 inches
Days to harvest: 90-120 days
Ready when: Harvest flower stems when bottom flowers are open and top buds are still closed; cut in morning after dew dries

Companion planting

Plant near

Rosemary — Same Mediterranean growing requirements

Get lavender 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