Cornell University suggests planting crowns 4 to 6 weeks before average last frost. To find your frost date, you can go to the following page and put in your zip code.
http://www.almanac.com/gardening/frostdates
If you have further questions, you might contact a local nursery or your county’s Cooperative Extension. Extension contact information can be found here:
http://www.almanac.com/content/cooperative-extension-services
Hope this helps!
Cornell University suggests planting crowns 4 to 6 weeks before average last frost. To find your frost date, you can go to the following page and put in your zip code.
http://www.almanac.com/gardening/frostdates
If you have further questions, you might contact a local nursery or your county’s Cooperative Extension. Extension contact information can be found here:
http://www.almanac.com/content/cooperative-extension-services
Hope this helps!