Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to determine when to plant mecardonia by reviewing the USDA zone info for Waterloo.

Planting Calendar for Mecardonia

Frost tolerance for mecardonia:	Not tolerant of frost.
When to plant:	After the last frost.

Mecardonia do not do well in cold weather which means that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant mecardonia in Waterloo 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 mecardonia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your mecardonia may not have a chance to really do well. You can get started a little bit earlier by starting your mecardonia indoors.

Last Frost Date

The average date of last frost is April 15 in Waterloo. You should expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Waterloo is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Waterloo you get a frost after April 15 so be sure to be ready to protect your mecardonia if you have one of those late frosts.

USDA Zone Info for Waterloo

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Waterloo

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