Date: 24 Jun 2018
Cold hardy tropical fruit trees for Luisiana
Q: I've just moved to Louisiana and have been wondering whether it would make sense to plant some tropical fruit trees in our garden. Average lows in New Orleans are 41 deg F in January and February, although we did hit 25 once with the Arctic vortex. I'm interested in litchi, longan, rambutans, and persimmons. Do you have varieties that can tolerate Louisiana's temperature range? I'd love mangosteen but I don't suppose they will survive. Do you have any suggestions on tropical fruit trees that I could try?
A:
Average temperatures are for statistics only; it is actual
temperatures that may hurt your cold sensitive plant. This
is what you should keep in mind when starting your
tropical fruit collection:
1) Ultra-tropical plants like Rambutan can not survive
winters below 45-50F. However, they can be successfully
grown in containers in a greenhouse or moved indoors into
a sun room during cold periods.
2) Tropical plants like Litchi and Longan may take some light
frost once established. Still, for areas with freeze our
advice is - keep them in pots and move inside in case of
cold.
3) There is a number of subtropical fruit trees that are
hardy enough to take some freeze. Persimmon, Feijoa, Fig, Cattley Guava, Jujube, Kiwi, some Eugenias and others. Please
refer to our Tropical Fruit Sensitivity Chart.
4) Remember that plant's ability to survive winter depends
on several factors, not only temperature itself. Important
factors are: wind protection (chill wind kills rather than
low temperature itself), exposure, how close the tree is
planted to the house, plant maturity and its overall
strength and health. If a plant had received good
nutrients during summer, has well established root system,
planted in enclosed area protected from winds and has
plenty of bright sunlight - it has better chances to
survive than a weak plant in warmer conditions.
5) Use SUNSHINE plant boosters for
improving cold tolerance of your tropical plant. It only
takes a few drops, and only costs $5!
