When to Plant Regal Geranium in Zone 1a

The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when it's a good idea to plant regal geranium is to examine the USDA zone info for Zone 1a.


Planting Calendar for Regal Geranium

Frost tolerance for regal geranium: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Regal Geranium are barely cold tolerant which means that you can get them planted just a bit earlier than more sensitive plants.

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

The earliest that you can plant regal geranium in Zone 1a is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant regal geranium and expect a good harvest is probably July. You probably don't want to wait any later than that or else your regal geranium may not have a chance to fully mature. Starting your regal geranium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on June 15 in Zone 1a. It might get as low as -60°F during the coldest months of winter.

Since the USDA zone info for Zone 1a is not always accurate the actual date of last frost changes from year to year. Half of the time in Zone 1a you get surprised by a frost after June 15 so make sure that you are prepared to protect your regal geranium if you have a late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in your other planting guides for Zone 1a.