When to plant Sweet Alyssum in Walton County County,
For Sweet Alyssum in Walton County County, the safe spring window opens around January 17 and closes around February 7. Last expected frost is March 14, first fall frost November 15, giving a 246-day growing season. A second sowing from September 6 to September 20 extends the harvest into fall.
When to Plant Sweet Alyssum in Walton County, FL
This month in Walton County, Florida
Welcome to June in Zone 9a. These are the moves that will have the biggest impact on your growing season.
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It's harvest week for sweet alyssum
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
A few tasks this June that'll pay off in July
- First harvests: sweet alyssum
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.
Walton County, Florida is in USDA Zone 9a. The average last spring frost is March 14 and the first fall frost is November 15, giving you a growing season of approximately 246 days.
At an elevation of 200 feet, Walton County receives approximately 52.8 inches of rainfall annually with predominantly sand soil. Summer highs average 95°F, so Sweet Alyssum may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Sweet Alyssum will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sweet Alyssum root diseases.
Walton County Soil Profile
Soil Type
Sand
Soil pH
4.8-6
Drainage
Well Drained
Sweet Alyssum Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Soil Compatibility in Walton County
How your county's soil matches Sweet Alyssum's growing requirements.
Soil pH
Your soil pH (4.8–6.0) is more acidic than Sweet Alyssum prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Walton County warms quickly in spring but drains fast. Sweet Alyssum will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Sweet Alyssum.
Organic Matter
Organic matter is low (1.5%). Add 2-3 inches of compost before planting Sweet Alyssum.
How to Plant Sweet Alyssum
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Sweet Alyssum
Sow every 5.1 weeks. Last sowing by Sep 16 to harvest before frost.
For a dedicated fall crop, sow by Sep 06.
Sweet Alyssum Water Budget
Monthly Watering Guide for Sweet Alyssum
Sweet Alyssum needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Sweet Alyssum Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.1" | 0" | ❄️ Dormant |
| Feb | — | 2.8" | 0" | ❄️ Dormant |
| Mar | 2.2" | 3.2" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 2.6" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 7.5" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 8.1" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 7.8" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 6.7" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 4.2" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 2.1" | 0.1" | 💧 Light watering |
| Dec | — | 2.3" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Walton County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Sweet Alyssum Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Sweet Alyssum Planting Timeline — Walton County, FL
Sweet Alyssum Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 14 | Feb 14 – Feb 28 |
| Direct Sow | January 17 | Jan 17 – Feb 7 |
| Bloom | March 21 | Mar 21 – Jul 4 |
| Fall Sowing | September 6 | Sep 6 – Sep 20 |
· 6" apart · Rows 8" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | Bloom |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
246 days in Walton County
Growing Tips for Sweet Alyssum in Walton County
Direct sow Sweet Alyssum outdoors after March 14 in Walton County when soil has warmed and frost danger has passed.
Sandy soil in Walton County dries quickly — mulch Sweet Alyssum with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Your generous 246.0-day season in Walton County allows multiple plantings of Sweet Alyssum. Sow every 22.0 days for continuous harvest.
Common pests for Sweet Alyssum in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
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
Check more plant combinations with our Companion Planting Checker →
Sweet Alyssum in Other Locations
Frequently Asked Questions
When should I plant Sweet Alyssum in Walton County, FL?
Walton County is in Zone 9a with an average last frost of March 14. Plan your Sweet Alyssum planting based on this frost date — see the calendar above for exact timing.
What planting zone is Walton County, FL?
Walton County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 14 and first fall frost is November 15.
When should I plant Sweet Alyssum in Walton County County, ?
In Walton County County, , plant Sweet Alyssum after the last frost (around March 14) and before the first frost (around November 15). Best results when soil holds above 50°F.
What growing zone is Walton County County, for Sweet Alyssum?
Walton County County sits in USDA Zone 9a. Sweet Alyssum grows reliably in zones 3a through 11b, so it's a good fit here.
Can Sweet Alyssum grow in Walton County County's climate?
Yes — Sweet Alyssum grows well in Walton County County's temperate climate. Walton County County averages a 246-day frost-free season, with last frost around March 14 and first frost around November 15.
Your Walton County Garden Planner — Free
A 22-page printable planner built for Walton County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.