Tip of the day: Growing Plumeria from seed

Q: I purchased a Plumeria from your company. It has done quite nicely and now has produced a seed pod. Please forward me information on how to care for it and use the seeds that may be inside to propagate another plant.

A: Wait until seeds are ripe (seed pod turns brownish). Soak seeds overnight. Use only well drained soil, or cactus mix. Insert heavy end of seed 1/4" into soil, leaving feathered end exposed. Place the pot in direct sunlight. Don't allow soil to completely dry out, but don't let it be soggy. Germination occurs usually within 3 weeks. Do not overwater. For more information on growing Plumerias, see our slideshow guide:

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!

Plant Horoscope. Virgo Zodiac lucky plants: Crape Myrtle and Laurus nobilis

Virgo - 8/23-9/22. Virgo is an EARTH sign ruled by the planet Mercury, which also rules Gemini. Virgo is traditionally the Goddess of the Grain, and is associated with autumn. Her plants often have finely divided leaves or stems, subtle odors, or small, brightly-colored flowers. The most beneficial plants for Virgo are high in potassium and help to calm the nerves. In its rulership of Virgo, Mercury governs the abdomen and the lower intestinal tract and the entire digestive process. Herbs associated with Virgo assist in digestion (as do Cancer herbs) and help to reduce flatulence. The relaxing, calming scents help Virgo release stress and worries.

Virgo Zodiac lucky plants: Amorphophallus, Dill, Barringtonia, Bolusanthus, Dioscorea, Grewia asiatica (Falsa), Hibiscus Karkade, Iboza riparia, Lagerstroemia Queens Crape Myrtle, Laurus nobilis (Bay Leaf), Lippia, Melissa, Catnip, Mint, Arugula, Piper betle, Piper sarmentosum, Psychotria, Clove, Banisteriopsis, Papaya, Mesua ferrea (Ironwood), Assai Palm, Jacaranda, Pimenta dioica (Allspice), Petrea, Plumbago, Clitoria, Eranthemum, Litchi, Cashew, Pecan, Nut trees, Cherries, Lavender, Sansiveria, Aloe vera, Blackberry, Honey suckle, Satureja, Vitex, Mulberry, Elaeocarpus, Feronia elephantum (Bel Fruit). On the photo: Sauromatum venosum - Voodoo Lily.

For links to these plants and other signs information, see full Plant Horoscope.

Repotting plants - Fall or Spring?

Q: I re-potted a mango tree into a five gallon pot, it looks great and is starting to bloom. Should I re-pot again while it is blooming or wait until spring? I will be moving the tree into the greenhouse when the temps drop.

A: You shouldn't re-pot any tropical plants in fall. Root system is small comparing to a new, larger pot. And it won't grow during fall-winter period. Therefore, you will have large volume of soil without any root in it, which may provoke rotting. Extra water will most likely cause over-watering of the plant. Wait till Spring to replant it.