One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By reviewing the USDA zone info for Riverbank it's possible to estimate when it's the best time to plant amaranthus.

Planting Calendar for Amaranthus

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

Amaranthus are not cold tolerant which tells us that you really should wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant amaranthus in Riverbank 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

On average the last frost has passed is on February 15 in Riverbank. You can expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Riverbank is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Riverbank there is a last frost after February 15 be ready to protect your amaranthus if you have a surprise late frost.

USDA Zone Info for Riverbank

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 Riverbank

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