The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when it's a good idea to plant amaranthus in Larkspur by reviewing the USDA zone info.

Planting Calendar for Amaranthus

Frost tolerance for amaranthus:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Amaranthus require warm weather which means that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant amaranthus in Larkspur is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant amaranthus and expect a good harvest is probably September. If you wait any later than that and your amaranthus may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your amaranthus indoors.

Last Frost Date

In Larkspur the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Keep in mind that USDA zone info for Larkspur may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Larkspur you get surprised by a frost after February 15 be ready to cover your amaranthus in the event of a late frost.

USDA Zone Info for Larkspur

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 Larkspur

You may be interested in your other planting guides for Larkspur.