One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when it's a good idea to plant primula is to look at the USDA zone info for Peru.

Planting Calendar for Primula

Frost tolerance for primula:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Primula can survive in cold weather which means that you can plant them a lot earlier in the year than other frost tender plants.

The earliest that you can plant primula in Peru 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 primula and expect a good harvest is probably September. Any later than that and your primula may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your primula indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Peru may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Peru you get surprised by a frost after April 15 be ready to cover your primula in the event of a surprise late frost.

USDA Zone Info for Peru

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 Peru

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