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.

A common way of getting a good idea when to plant alstromeria is to use the USDA zone info for Truckee.

Planting Calendar for Alstromeria

Frost tolerance for alstromeria:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Alstromeria do well in moderate cold which tells us that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant alstromeria in Truckee 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 alstromeria and expect a good harvest is probably September. Any later than that and your alstromeria may not have a chance to fully mature. You can get started a few weeks earlier by starting your alstromeria indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Truckee. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Truckee is an average the actual date of last frost will vary from year to year. Since half of the time in Truckee there is a last frost after April 15 be ready to cover your alstromeria if you have a late frost.

USDA Zone Info for Truckee

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Truckee

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