One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. 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 the best time to plant alternanthera in Ogallala by looking at the USDA zone info.

Planting Calendar for Alternanthera

Frost tolerance for alternanthera:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since alternanthera require warm weather it's necessary to wait until after the last frost before you can plant them.

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

The last month that you can plant alternanthera and expect a good harvest is probably August. You probably don't want to wait any later than that or else your alternanthera may not have a chance to fully mature. You can get started a few weeks earlier by starting your alternanthera indoors.

Last Frost Date

The average date of last frost is April 15 in Ogallala. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that USDA zone info for Ogallala is not always accurate and the actual date of last frost changes from year to year. Half of the time in Ogallala it frosts late in the year after April 15 so be sure to be ready to cover your alternanthera in the event of a surprise late frost.

USDA Zone Info for Ogallala

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Ogallala

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