How to get Jasmines to flower

Q: On the picture, these are a few of the jasmine plants that I have from Top Tropicals. I have bought so many plants from you over the years, not just jasmine. I have several varieties of jasmine. They were all doing very well. However this year I didn't get a single flower. There are a lot of buds... But before the buds open they become brown and withered. I bought fertilizer from you. Fertilized the plants once a month like I always do. I water the plants once a week. I repotted the plants hoping that would take care of this problem. Some of the jasmine plants I pruned... the plants came back vigorous growth with a lot of buds... BUT it is the same problem! Please help.

A: One of the possible reasons why they have flower issues is - maybe they don't have enough sunlight. They need to be in full sun all day long for profuse blooming and proper flower forming. However since the buds are forming, there may be just enough light. In this case, dropping buds may be a sign of overwatering.

Important steps - how to make Jasmine Sambac flower:

1. Soil. Use only well-drained soil

2. Water. Keep plants on a dry side and never over water. If the top of the soil is still moist, do not water.

3. Sun. Keep in full sun all day long. The more sun, the more flowers.

4. Bloom booster. Use Flower booster fertilizers:
Pink N Good Daily Plant Food - Flower Booster
Fragrant Plant Special booster, this 90-day Smart-Release container plant food:
Plumeria Top Dress - Smart-Release Booster
Do not use fertilizers with high Nitrogen (1st number in NPK formula) - those will promote more leaves instead of flowers.

5. Micro-elements. Use Apply micro-elements, they will help the plant to develop healthy and long-lasting flowers:
SUNSHINE SuperFood - plant booster

Here is more information on growing Jasmine

Date: 29 Aug 2019

How to establish a Mango Tree

Q: I received my mango tree from you on Monday and it looked beautiful. I followed the instructions and kept it out of direct sun. I watered it a little each day when the potting mix was dry to the touch. But the leaves are turning yellow and brown then falling off. Should I have removed the tree from the soil it was packed in?

A: Leaf drop and dry/yellow leaves are normal symptoms of shipping stress. Your mango tree looks healthy overall. Considering you have high humidity now in Louisiana, the plant should recover soon under proper care. These are important tips:

- Keep the plant in bright shade, away from direct sun - at least for a week, then you may start moving it gradually to semi-shade, then to full sun within a few days.
- Do not over-water. If the top of the soil is still moist, do not water until it dries a little bit. Mango prefers to stay on a dry side. From this point, over-watering is more dangerous than under-watering. You may skip a watering if in doubt.
- If it rains every day, make sure to keep the pot under the roof to protect from excessive water.
- Do not remove original soil and do not disturb roots.
- You used the right container size and looks like you have a quality soil with good drainage. Keep the plant in this container at least for a few months. You may step it up only when you see a lot of active growth of branches and leaves - this means, the root system is developing fast too.
- do not fertilize until you see new growth. Then use Mango Food Smart release.
- to help the plant recover from stress, you may use SUNSHINE-E booster and micro-element foliar spray with SUNSHINE-Superfood

Date: 8 Aug 2019

Tabernaemontana africana - a bush or a tree?

Q: I received a Tabernaemontana africana, but it is not the compact cultivar, from the photo, this is definitely the tree version, not the compact version?

A: The plant in your picture is Tabernaemontana africana and it is a shrub version, not a tree. The plants we have in stock are smaller size but very vigorous so they can be trained into standards.
We have this plant in our garden in the ground (3 years old) and by now it bushed out and remains under 4 ft without any pruning. Just keep in mind this plant requires regular applications of micro-elements, because the species is very susceptible to iron deficiency. The supplement we use, in case you notice any leaf yellowing, is Sunshine-Superfood

Date: 29 Jul 2019

Monster hybrids of Monstera: juvenile and mature

by Mark Hooten, the Garden Doc

Q: I am a rare plant collector and obtained a very interesing cultivar of Monstera from you that says it's a hybrid Monstera adansonii x obliqua. Is there a named hybrid? The leaves on this specimen that came in 1 gal pot are much larger than the plant I have grown in a 3 gal pot for a few years, under name of Monstera friedrichsthalii.

A: Due to their diversity, it is hard to find verified hybrids in the genus Monstera. M. friedrichsthalii is apparently an old Florida name for what is actually technically M. adansonii. The "primitive" juvenile growth is very different from the much larger more robust form that only occurs when it is allowed time to climb a tree, in which case the foliage becomes very different and much larger with many many more fenestrations (holes) of various sizes. If you visit our Garden Center, you can see the mature form climbing the oak tree in our Shade Garden in front of our office - we use this mature plant for propagation. If you take a cutting and don't let it attach to a bark/trunk and climb upwards, it will quickly revert to the wimpy juvenile form. Seems that even climbing a pole indoors, it never actually develops into the truly mature more complex adult stage. Some juvenile forms growing on a tree if given too much shade, do not develop into the larger mature form. Move it in more light and allow it to climb, and it will look very different, but still is the same plant under different conditions.

Date: 29 Jun 2019

Variegated Shell Ginger - Alpinia zerumbet

By Onika Amell, tropical plant specialist

Q: I live in Deltona, Florida and hoping to find spreading ginger with interesting foliage to grow in a partially shaded area in my garden under a group of trees. Any suggestions?

A: Variegated ginger Alpinia zerumbet variegata is a clumping ginger valued for its beautiful variegated foliage. The dark, green leaves have striking yellow stripes. This ginger is sought-after, not only for the stunning foliage but also for its beautiful flowers. The flowers are different from other members of the ginger family and appear in drooping racemes from the ends of leafy stems rather than directly from the rhizomes. This ginger is also commonly known as Shell Ginger because the flowers resemble seashells! They are pink-tinged, fragrant and appear in summer. This evergreen perennial grows in upright clumps 3-5 feet tall. You may prune the plant to control size.
It does not tolerate drought or a hard freeze but can take a few hours or light frost (goes dormant in such case). In colder areas, rhizomes should be dug up and stored in a cool room during winter.
This ginger will love a shaded corner in your garden. Plant it in organically rich, well-drained soil in full sun to part shade. Keep the soil moist but not soggy, and spread a thick layer of organic mulch around the plant for moisture retention. There are no serious insect or disease problems to worry about!
This ginger can be also be grown as a house plant as long as it has bright light and humid conditions. It will grow to around 3-4 feet tall as a houseplant.