SproutSmart
SproutSmart™ Intelligent Garden Sowing

Phenomenal

Lavender
Zone 11a Save Garden

Planting Schedule

Add Phenomenal to your garden to build a schedule and get reminders.
Botanical illustration of Phenomenal
90d to harvest

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.

Crop Dates

Growing note: In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors—
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsDec 30th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity90
Sun RequirementsFull SunFull sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)65
Min Soil Temp (°F)60
Min Night Temp (°F)40
Harden Off (days)7

Today's Conditions

Outdoor planting for Phenomenal in Zone 11a typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Phenomenal.

Garden Alerts

In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).

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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.
Botanical illustration of Phenomenal

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.

Today's Conditions

Outdoor planting for Phenomenal in Zone 11a typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Phenomenal.

Garden Alerts

In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 60°F for reliable germination and early growth.

Expert Note

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