When Can I Plant Delphiniums in Zone 12a

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Can I Plant
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One of the best tools that you have as a gardener to help figure out your gardening schedule is the USDA zone info. The zone information's most crucial data reveals the average last frost and the lowest expected temperature for your area.

To determine the appropriate planting time for delphiniums, you can utilize the USDA zone information for the 12a region.

Planting Calendar for Delphiniums

Frost tolerance for delphiniums Tolerant of some frost
When to plant Up to 5 weeks before last frost

Because delphiniums are slightly tolerant to cold, you can plant them earlier in the year compared to other frost-sensitive plants.

Visual Calendar for Delphiniums

Planting Calendar for Delphiniums in Zone 12a

 
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
J
F
M
A
M
J
J
A
S
O
N
D
Frost
Last Frost
First Frost
No Frost in Zone
Start Seeds
Indoors
Direct Sow
Transplant
Transplant Outside
Harvest
Harvest Time
Winter Crop
Winter Crop
Over-winter
Over-winter

Key dates to remember:

 
Start seeds indoors: Jan 1
 
Direct sow seeds: Jan 1
 
Transplant starts outside: Jan 15
 
Summer harvest time: Feb 15
 
Start winter crop: Oct 1
 
Start over-winter: Dec 1

Last Frost Date for Zone 12a

It rarely frosts in zone 12a. It might get as low as 50°F (10°C) during the coldest months of winter.

As the USDA zone information for zone 12a is only an average, the actual date of your last frost will differ annually. Since every microclimate is different, you should also watch the weather forecast closely as you get close to planting time. Watch the weather forecast before planting outside, and have frost protection ready if low temperatures are expected.

USDA Info for Zone 12a

Here is the info for USDA zone 12a.

Average Date of Last Frost (spring) Never
Average Date of First Frost (fall) 1970-01-01
Lowest Expected Low 50°F (10°C)
Highest Expected Low 55°F (12°C)

This means that on a really cold year, the coldest it will get is 50°F (10°C). On most years you should be prepared to experience lows near 55°F (12°C).

Other Plants to Grow in Zone 12a

You may be interested in our other planting guides for zone 12a.

Vegetables in Zone 12a

Herbs in Zone 12a

Flowers in Zone 12a

USDA Zones

USDA zones are a popular way of determining which plants can grow in your area. Zones tell you when your average first and last frost date are, as well as how cold you can expect it to get in the winter.

Our site works best if you choose your zone from the list below. If you do not know your USDA zone, then you can use our zone map.

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