Phenomenal

Lavender

Zone 10a Save Garden

🌱 90d to harvest Upright

Breathe in the first bloom of Phenomenal Lavender—an aromatic rush of cool, floral lavender that lingers on warm air. At maturity…

Crop Dates

Milestone	Date
Start Indoors	Nov 21st
Last Frost	Jan 16th
Transplant / Sow Outdoors	Mar 13th
Harvest Begins	Jun 11th
Harvest Ends	Dec 19th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	65
Min Soil Temp (°F)	60
Min Night Temp (°F)	40
Harden Off (days)	7

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Frequently Asked Questions

What pest or disease most commonly affects Lavandula × intermedia, and how do I treat it?

In Lavandula × intermedia, root and stem issues from overly wet soil commonly show up as crown rot (wilting, darkened stems near the base). Remove any visibly rotting parts, improve drainage immediately, and water only when the top 2–3 cm of soil is dry; avoid wetting the foliage. If you see persistent fungal growth or repeated symptoms, cut back to healthy wood and switch to a well-draining mix (often with extra grit) to prevent recurrence.

How often should I water Lavandula × intermedia during the main growing phase?

During active growth, water deeply but infrequently—aim for roughly once every 7–14 days depending on heat—so water reaches the root zone and then drains away. Let the soil dry back to about 2–3 cm below the surface before watering again; lavender in Lamiaceae strongly dislikes consistently moist soil. In full sun, established plants often need less frequent watering, while newly planted starts may need a lighter cadence for the first few weeks.

How can I tell when Lavandula × intermedia is ready to harvest (about 90 days)?

Harvest when the flower spikes are mostly open but still show some buds that haven’t fully colored out—this timing usually produces the best fragrance for dried or bundled stems. You should be able to see clear bloom on the upper and middle parts of the spike while the bottom is just beginning to open. Cut stems early in the day, leaving 5–10 cm of foliage below the cut to encourage a strong second flush.

Breathe in the first bloom of Phenomenal Lavender—an aromatic rush of cool, floral lavender that lingers on warm air. At maturity, its richly colored flower spikes rise with a poised, silvery grace, offering a crisp, dry-textured bouquet that holds its fragrance beautifully for sachets and dried arrangements. Grow Phenomenal for a long season of scent and an ornamental presence that turns borders and sunny beds into a fragrant, living landscape.

Sowing Tips

Transplant Conditions

Wait until soil reaches 60°F and nights stay above 40°F before moving outdoors. Harden off for 7 days first.

Expert Note

Plant in well-drained, gritty soil and avoid overwatering—lavender roots rot in persistent moisture even if cold-hardy.