When to Plant Geranium in Avon, CO

Before planting it is a good idea to find your USDA Zone info to determine 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.

The first chance to plant geranium in Avon should be figured out by looking at the USDA zone info.


Planting Calendar for Geranium

Frost tolerance for geranium: Not tolerant of frost.
When to plant: After the last frost has passed.

It's probably a bad idea to plant geranium until after the last frost has passed because they are not cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant geranium
Possibly ok, but a risky time to plant geranium
Probably not a good time to plant geranium

The earliest that you can plant geranium in Avon is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant geranium and expect a good harvest is probably August. Any later than that and your geranium may not have a chance to fully mature. If you are starting your geranium indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on May 15 in Avon. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Avon is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Avon it frosts late in the year after May 15 be ready to protect your geranium if you have a late frost.

USDA Zone Info for Avon

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-25°F
Highest Expected Low-20°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 -20°F.

Plants to Grow in Avon

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