Hardiness Zones - Check for your Zone Here

Hardiness zones for growing caladiums

Bulbs should be planted in the spring after the last frost and soil temps are 70 or more.  The USDA temperature zone chart provides the following guidelines, however temperatures can vary in specific locales therefore nothing substitutes for local knowledge for exact planting dates. YOUR ZONE CAN CHANGE! From time-to-time the USDA upgrades the zones, our calculator below will give you the latest upgrade for your zone by entering your zip code.


Your USDA Zone Lookup


Planting Dates (EARLIEST recommended for your hardiness zone)
Local conditions can vary!

  • Zones 10 A & B - March 12th

  • Zone 9B - March 19th   Zone 9A - March 26rd

  • Zone 8B -April 2nd   Zone 8A - April 9th

  • Zone 7B - April 16th   Zone 7A - April 23rd

  • Zone 6B - May 15th   Zone 6A - May 20th

  • Zones 5 A/B - usually the last week in May

  • Zones 4 -  usually the first week of June

Early Planting Dates Guidelines:
   Plant after last frost
   Soil temperatures should be above 65F
   Bulbs can be sprouted inside your house and transplanted outside for quicker start

Latest Planting Dates

  • Zone 9-10 September 1

  • Zones 7-8 August 15

  • Zones 5-6 August 1

  • Zones 3-4 July 15

      Late Planting Date Guidelines
Late season bulbs usually sprout fast; 3 weeks
     Late plantings should be done no later than 7 weeks before first frost.

more tips on planting

Caladium bulbs like warm moist (not soggy) soil. To get a jump start in northern climates, put your bulbs knobby side up about 1" to 2" deep in a  shallow pan, bag or flat full of potting mix. Keep the mix warm (70's is nice) and you will find the bulbs shooting up and ready to transplant in the ground.