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

In Hillsdale you can estimate when it's the best time to plant alstromeria by using the USDA zone info.

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 means that you can plant them a little bit earlier than more sensitive plants.

The earliest that you can plant alstromeria in Hillsdale 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 grow to maturity. You can get started a little bit earlier by starting your alstromeria indoors.

Last Frost Date

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

Since the USDA zone info for Hillsdale is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Hillsdale you get a frost after April 15 be ready to cover your alstromeria if you have a surprise late frost.

USDA Zone Info for Hillsdale

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 Hillsdale

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