One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for New Port Richey can be read to determine when it's the best time to plant dahlia.

Planting Calendar for Dahlia

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

Since dahlia are not cold tolerant you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant dahlia in New Port Richey is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant dahlia and expect a good harvest is probably September. If you wait any later than that and your dahlia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your dahlia indoors.

Last Frost Date

The average date of last frost is February 15 in New Port Richey. It might get as low as 25°F during the coldest months of winter.

Remember that USDA zone info for New Port Richey is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in New Port Richey it frosts late in the year after February 15 so just be sure to be ready to cover your dahlia if you have a late frost.

USDA Zone Info for New Port Richey

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in New Port Richey

You may be interested in your other planting guides for New Port Richey.