Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when you can plant delphinium is to examine the USDA zone info for Lake Alfred.

Planting Calendar for Delphinium

Frost tolerance for delphinium:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant delphinium a bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant delphinium in Lake Alfred is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant delphinium and expect a good harvest is probably September. You probably don't want to wait any later than that or else your delphinium may not have a chance to really do well. You can get started a little bit earlier by starting your delphinium indoors.

Last Frost Date

The average date of last frost is February 15 in Lake Alfred. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Lake Alfred is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Lake Alfred there is a last frost after February 15 be ready to protect your delphinium in the event of one of those late frosts.

USDA Zone Info for Lake Alfred

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Lake Alfred

You may be interested in your other planting guides for Lake Alfred.