Delaware is not the best place to grow palm trees due to its temperate humid climate and small number of sunny days. Delaware climate is humid subtropical and continental. Weather in Delaware is strongly influenced by the Atlantic ocean.
The southern part of the state has milder climate than the northern part. In July, average temperature is around 76°F (24°C). In January, average temperature is around 31°F (–1°C). The warmest temperature ever recorded was 110°F (43°C) and the lowest was –17°F (–27°C). Delaware USDA hardiness zones range from 7a to 7b.
Delaware USDA Zones
Growing Palm Trees in Delaware
Like in many other states with temperate and humid climate, it is challenging to grow palm trees without creating a microclimate. Plant only very hardy and durable palms that can tolerate varies conditions. Also, provide protection during cold days. Some of the palms that can be grown in Delaware are:
- European Fan Palm Tree – Zones 7b-11 (5 to 10 F)
- Pindo Palm Tree – Zones 7b-11 (5 to 10 F)
- Sago Palm Tree – Zones 7b-11 (5 to 10 F)
- Saw Palmetto Palm Tree – Zones 7a-11 (0 to 5 F)
- Windmill Palm Tree – Zones 7b-11 (5 to 10 F)
Major Cities in Delaware
Wilmington – Hardiness Zone 7a
P.S. If you have any questions, leave me a comment below and I do my best to answer them as soon as I can.