One of the best tools that you have as gardeners to help us determine 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.

You should be able to determine when it's the best time to plant pansies by looking at the USDA zone info for Oswego.

Planting Calendar for Pansies

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

Pansies are very cold tolerant which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant pansies in Oswego 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 pansies and expect a good harvest is probably September. If you wait any later than that and your pansies may not have a chance to grow to maturity. If you are starting your pansies indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Oswego. It might get as low as -15°F during the coldest months of winter.

It's important to remember that USDA zone info for Oswego is not always accurate and the actual date of last frost is different every year. Since half of the time in Oswego last frost occurs after April 15 be ready to protect your pansies in the event of a surprise late frost.

USDA Zone Info for Oswego

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 Oswego

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