When to Plant Sweet Alyssum in USDA Zone 11a
July in Zone 11a — your action list
July rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Zone 11a.
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Plan the fall garden
Make a planting map for August. Tomatoes, peppers, brassicas, lettuce, root crops all go in over the next 8 weeks. Soil amendments and irrigation prep happen now.
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Keep heat-survivor crops productive
Daily harvest of okra and southern peas keeps plants producing. Let pods over-mature and the plant stops setting new fruit.
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Watch for hurricane prep season
August-October is hurricane season. Stake young trees, secure rain barrels, and plan how to protect tender transplants from high winds.
Sweet Alyssum (Lobularia maritima) is a low-growing cool-season annual prized for its honey-scented clusters of tiny white, pink, or purple flowers. A workhorse border plant, it tolerates light frost, self-seeds readily, and attracts beneficial insects throughout its bloom season. In warm climates it often re-blooms in fall after summer heat fades.
In Zone 11a, the average last spring frost is around January 1 and the first fall frost is around December 31, giving you a growing season of approximately 364 days.
Sweet Alyssum Planting Timeline — Zone 11a
Where Is USDA Zone 11a?
The map below highlights the states that contain Zone 11a. Click any state to see the Sweet Alyssum planting schedule for that location.
Sweet Alyssum Planting Calendar — Zone 11a
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | November 6 | Nov 6 – Nov 20 |
| Direct Sow | October 9 | Oct 9 – Oct 30 |
| Bloom | December 4 | Dec 4 – Feb 12 |
| Fall Sowing | September 24 | Sep 24 – Oct 8 |
· 6" apart · Rows 8" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Bloom |
| February | Bloom |
| March | — |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Direct Sow Fall Sowing |
| November | Transplant Outdoors |
| December | Bloom |
Free Zone 11a Planting Calendar PDF
Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 11a with start dates, transplant windows, and harvest times.
Growing Conditions
Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
Days to Maturity
45–60 days
Soil pH
6 – 7.5
Zone Temperature Range
40°F to 45°F average annual minimum
Growing Season
365 days (Zone 11a average)
Planting Specifications
| Plant Spacing | 6 inches apart |
| Row Spacing | 8 inches between rows |
Succession Planting Sweet Alyssum in Zone 11a
Sow every 5.1 weeks for continuous harvest throughout the season.
Growing Tips for Sweet Alyssum in Zone 11a
Zone 11a offers a long growing season (~365 days). You can plant Sweet Alyssum earlier and may get multiple harvests.
Surface-sow seeds — they need light to germinate. Direct-sow as soon as soil can be worked in spring; in zones 7+ also sow in fall. Thin to 6 inches apart. Shear back hard in midsummer when heat causes dormancy — plants recover and re-bloom when cool weather returns. Self-seeds prolifically; allow a few plants to set seed for a perpetual colony.
Companion Planting
Good Companions
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Saving Sweet Alyssum Seeds
Recommended for Your Garden
Reduce heat stress and sun scorch in hot climates with UV-stabilized shade cloth.
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Related Plants
Sweet Alyssum in Other Zones
Sweet Alyssum by State
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Frequently Asked Questions
When should I plant Sweet Alyssum in Zone 11a?
In Zone 11a, plan your Sweet Alyssum planting around the average last frost date of January 1. Direct sow outdoors around October 9. Transplant seedlings around November 6.
Can Sweet Alyssum grow in Zone 11a?
Yes, Sweet Alyssum can grow well in Zone 11a, hardy in USDA zones 3a through 11b. Zone 11a has a growing season of approximately 364 days, which is sufficient for Sweet Alyssum (45-60 days to maturity).
When can I harvest Sweet Alyssum in Zone 11a?
In Zone 11a, expect to harvest Sweet Alyssum from December 4 – February 12. Sweet Alyssum takes 45-60 days from planting to harvest.
What is the last frost date for Zone 11a?
The average last spring frost in Zone 11a is around January 1, and the first fall frost is around December 31. This gives a growing season of approximately 364 days. These are 50% probability dates — actual frost dates vary year to year.
What should I plant next to Sweet Alyssum?
Good companion plants for Sweet Alyssum include Lettuce, Broccoli, Strawberries, Tomatoes. These companions can help with pest control, pollination, and nutrient sharing.
Your Zone 11a Garden Planner — Free
A 22-page printable planner tailored to Zone 11a. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.