When to Plant Snapdragon in USDA Zone 11a
Your June planting checklist for Zone 11a
Each item below is timed to Zone 11a's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Survive, don't thrive
June-August is endurance gardening. Keep okra, peppers, sweet potatoes, and southern peas alive. Harvest everything daily before the heat damages produce on the vine.
-
Start fall tomato seeds indoors
Yes, indoors — under lights or in AC. They'll be ready to transplant in August when temperatures briefly moderate.
-
Add compost to empty beds
Empty beds get a thick layer of compost + mulch to suppress weeds and feed the soil for fall planting.
Snapdragons (Antirrhinum majus) are classic cool-season annuals whose upright spikes of dragon-lipped flowers are among spring's most dramatic displays. Tolerating light frosts, they bloom from early spring until summer heat shuts them down — then often revive in fall. In zones 9-11 they are grown as fall-planted winter annuals and may re-seed to naturalize.
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.
Snapdragon 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 Snapdragon planting schedule for that location.
Snapdragon 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 | January 1 | Jan 1 – Jun 18 |
| Fall Sowing | September 10 | Sep 10 – Sep 24 |
· 9" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Bloom |
| February | Bloom |
| March | Bloom |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Direct Sow |
| November | Transplant Outdoors |
| December | — |
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
Moderate — regular watering
Days to Maturity
70–100 days
Soil pH
6.2 – 7
Zone Temperature Range
40°F to 45°F average annual minimum
Growing Season
365 days (Zone 11a average)
Planting Specifications
| Plant Spacing | 9 inches apart |
| Row Spacing | 12 inches between rows |
Succession Planting Snapdragon in Zone 11a
Sow every 8 weeks for continuous harvest throughout the season.
Growing Tips for Snapdragon in Zone 11a
Zone 11a offers a long growing season (~365 days). You can plant Snapdragon earlier and may get multiple harvests.
Start indoors 10-12 weeks before last frost; seeds need light to germinate — press into moist medium and do not cover. Transplant after hardening off, even if light frosts remain. Pinch seedlings once to encourage branching. Deadhead to prolong blooming. In zones 8-11, sow in fall for a winter-to-spring show. Tall varieties (24-36") make excellent cut flowers.
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 Snapdragon 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
Snapdragon in Other Zones
Snapdragon 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 Snapdragon in Zone 11a?
In Zone 11a, plan your Snapdragon planting around the average last frost date of January 1. Direct sow outdoors around October 9. Transplant seedlings around November 6.
Can Snapdragon grow in Zone 11a?
Yes, Snapdragon can grow well in Zone 11a, hardy in USDA zones 2a through 11b. Zone 11a has a growing season of approximately 364 days, which is sufficient for Snapdragon (70-100 days to maturity).
When can I harvest Snapdragon in Zone 11a?
In Zone 11a, expect to harvest Snapdragon from January 1 – June 18. Snapdragon takes 70-100 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 Snapdragon?
Good companion plants for Snapdragon include Lettuce, Carrots, Sweet Alyssum, Lobelia. 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.