The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Rhinelander should be reffered to in order to estimate when it's the best time to plant alstromeria.

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 a little bit of cold which tells us that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant alstromeria in Rhinelander 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 alstromeria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your alstromeria may not have a chance to really do well. Starting your alstromeria indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Rhinelander. You should expect an average low temperature of -30°F in the coldest months of winter.

It's important to remember that USDA zone info for Rhinelander may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Rhinelander there is a last frost after May 15 be ready to protect your alstromeria if you have a surprise late frost.

USDA Zone Info for Rhinelander

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Rhinelander

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