Jungle on Windowsill 101

Q: I got a Jasmine Sambac and a Tahitian gardenia as presents, they are very cute plants with flowers and flower buds. I would like to be able to keep them alive and hopefully happy for a long time, but I don't know much about growing tropical plants, and I am not sure if my thumb is green enough to make everything right. What do they need? How much sun? How much water? What kind of soil? Sorry for all these (maybe silly) questions, but I want to keep them alive, please help! I live in Wisconsin and we had some snow again last week.

A: Growing tropicals is not a hard work, it is a lot of fun! These plants are actually a good starters for a beginner who wants to try growing tropical plants, no matter if you live in a mild frost-free climate, or up North where you can have these beauties as houseplants. Below are a few simple steps for you:

1. Read. Follow planting instructions included with your plants. Check plant names on the tags and learn more about them from our online catalog.

2. Soil. Plant in quality potting mix - it must be porous and well-drained, never use heavy soils (top soil or garden soil are no-no), in a pot exactly the size of the root system. You can step up your plants in the next size container once you notice vigorous new growth. Next size means: 4" pot can go into 6" pot, 6" pot into 10" pot, etc. Too big of a pot may create rotting environment, root system must fill the entire container to use all the moisture from the soil. Container must have good hole(s) for excess water to drain through. Put the pot in a saucer and get rid of excess water every time after watering.

3. Light. Most tropical plants require lots of light in order to produce flowers. If you ever visited Florida, remember the bright sun? - these are ideal light conditions for tropicals. Up North, provide as much light as possible: a bright spot on a windowsill of Southern or Western exposure would work the best. If the sun gets too hot in summer afternoon, you may shade the window a little bit with a sheet of white paper to avoid leaf burn.

4. Water. Keep soil slightly moist but not soggy. The best way is to wait until the top of the soil feels dry to touch - this is time to water again. Jasmines prefer to stay on a dry side; gardenias do not like soil to dry out - keep them slightly moist as long as soil is very porous and well-drained. The main reason of most problems with potted indoor plants is over watering. With experience, you will feel the right balance of moisture in the soil: the brighter the light, the more water is consumed by a plant; the less light, the less frequent you should water.

5. Trimming. In low light conditions, plants tend to become leggy. Trim branches as they become too long: the more you trim, the busier the plant gets. New growth promotes more profuse blooming in many species.

6. Fertilizing. Fertilize indoor plants with slow-release granulated fertilizer from march to November.

7. Insects. Check for insects at least once a month, especially underneath the leaf. If notice any problems (deformed leaves, residue, holes, or tiny insects) - clean the leaves/stems with a solution of warm water (1 cup), vegetable oil (2 table spoons), and a few drops of a dish soap.

8. Fresh air and air humidity. As soon as air temperature gets above 65F, bring your tropicals outside in the sun and fresh air: porch, balcony, outside in the yard. Air circulation is essential for your plant health. Bright light and high air humidity will promote vigorous growth, and lots of flowers for you to enjoy!

For more information on growing Tropical Plants 101, see Problem solving with potted plants - how can we help them?.

Tropical gardener beginning-of-year checklist

Final pre-Spring check of whatever we had forgotten! For a gardener, the year ahead is a chance to do things you want, as a way to achieve the things you need to do. If your number one New Year's resolution is to garden more (a want-to item), you also will be exercising more (a need-to). Or if you plant a new edible garden (want, want, want), you will end up checking off "eat more leafy vegetables and fruits" from your to-do list!

12 steps to get ready for 2021 season:

1 - Spray fruit trees and houseplants with insecticide and micro-elements
2 - Continue spraying SUNSHINE-Epi to improve plant hardiness
3 - Protect tender plants during cold spells and especially from freeze
4 - Reduce watering during cooler months, keeping the root zone on a dry side
5 - To give your plants a kick start, fertilize with liquid SUNSHINE Boosters fertilizers - they are safe to be used year round
6 - Plant fruit trees: winter planting is beneficial to avoid heat stress for roots
7 - Plant Butterfly and Hummingbird Attractants
8 - Plant bulbs, vegetables and herbs. Use eco-safe, natural SUNSHINE boosters for all your edibles.
9 - Plan your summer garden and order seeds early
10 - Start tropical plants from seeds (indoors for cooler climates)
11 - Start ordering tropical plants and beneficial soil mix to get them established after shipping in pots
12 - Clean and oil garden tools

Mango ID and ripeness

Q: As the World's Leading Authority on Tropical Plants, I hope you can help us out. We obtained a mango tree from a City giveaway, and planted it a few years ago. This is the 1st year it has produced fruit. They are almost all green color, & range from 6-7 inches in length. Attached are a few photos of the tree & its fruit. Please help to identify the type, and how to determine when they would be ready to pick. Or should we just wait until they fall off of the tree?

A: If the tree is grafted, it normally starts flowering within a year after planting. If the tree is over 6 years old and just now started fruiting - chances are, this is a seedling (possible at giveaways) without specific variety. However the fruit looks pretty good size and shape, hopefully it tastes great. You will find out soon!
Based on the pictures, there maybe a few possible choices, including varieties (or their seedlings) Keitt, Rosigold, it can be even Lancetilla if fruit grows bigger than 7" long. The next step would be, wait until the fruit get some color, then it will be easier to narrow down the variety. Also see if there is a lot of fiber or no fiber.
You may wait until at least one fruit ripens on the tree and let it fall naturally - that will be the color (can be all green, but in your case it looks like it's turning yellow blush). After that, you may pick full size fruit before they fall and let them ripen on a kitchen table. Usually once the fruit starts showing color, it is close to ripening. For all-green varieties, just wait till fruit grows to maximum full size. You may also check if the fruit gets softer to touch, then it's ready.

Plants like to snack!
How to feed Poinciana tree

(and other tropical flowering trees)

Q: We purchased a Royal Poinciana tree from TopTropicals not too long ago and we gradually gave it more sun until finally we were able to plant it in direct sunlight where it's been for a week or so. Rain has been sporadic lately so I'm giving it a little bit of water every day. It seems to be doing fine. I do have a question about whether the leaves are as green as they should be? I read online that I should fertilize it with gardenia / ixoria fertilizer in March, June, and October. I looked on homedepot.com but didn't really find anything that goes by that name. Would fertilizer help? Can you suggest a fertilizer?

A: Your Poinciana tree looks pretty healthy and happy, congratulations with a great job!
Traditional (old-school) fertilizer recommendations usually suggest feeding a plant 2-3 times a year with a slow-release fertilizer. And although a plant will benefit from any fertilizer application (extra food is always good), however, for the best results, faster growth, sooner and more profuse blooming, your should use complete plant nutrition products - liquid fertilizers (see why liquid fertilizers are better than dry).
Here is an example. Some people eat a big heavy meal once a day which we all know, is not very healthy. Other people eat balanced food more frequently but in smaller portions - this is always the best way to go.
From this point, plants prefer SNACKING - frequent feeding, but with less concentrated, mild and balanced nutrients.
For your beautiful Poinciana tree (and other flowering plants), we suggest the following nutrition program:

1) SUNSHINE Megaflor - Bloom Nutrition Booster - you may use this fertilizer as frequent as with every watering, it won't burn the roots, and will provide a complete nutrition for all plant needs throughout the year. You can continue fertilizing with Megaflor even during winter time. Sunshine Megaflor will help you to keep the plant healthy, vigorous, and resistant to stress and diseases. It turns leaves green and makes the plant strong so it will start flowering sooner for you.

2) Tropical Allure - Smart-Release Booster. Apply it once a month during hot season only (in Florida - from March to November).

Plant of the Month: Golden Dewdrop - Duranta erecta

Stevie's Pick: what's in bloom?

Our exotic plant grower Steven Gowdy is featuring the most interesting plants he discovers and recommends today while working in TopTropicals greenhouses.

Duranta - Golden Dewdrop - is simply stunning with cascading flowers in abundance. Either it has lavender, blue, or solid white flowers, it is a sight to behold. The popular name Golden Dewdrop is inspired by the clusters of bright orange-yellow berries that follow the flowers, in such quantities that they often cause the slender branches to droop gracefully.
Duranta erecta blooms off and on all year and can be pruned to size as a bush or a standard tree. If let go, it can grow up to 20 feet tall and wide.
Durantas are excellent butterfly and hummingbird attractors. They will complement your tropical garden or a stand alone in your Southern landscape. Great for providing a color contrast in the landscape, they are especially well-suited as a bright-colored background or screening.
White Golden Dewdrop has pure white flowers that appear in loose clusters, and both berries and blossoms are often seen on a plant. This evergreen fast growing shrub spreads and arches to 10 feet tall and wide and is great for live hedges and covering fences and corners.
Variegated variety, also called Variegated Sky Flower, is grown for its summer flowers, and very showy leaves that are dark green with bright white variegation and creamy-yellow margins around the one inch long serrated leaves.. In the summer, cascading clusters of blue tubular flowers appear followed by wonderfully contrasting orange-yellow berries.
In mild climates, Durantas can be in flower nearly year round with flowers and fruit appearing at the same time. It does best in full sun with frequent deep watering and is pretty hardy, to about 20-25F. It is a good choice for espaliers, as a small tree or large bush; all forms benefit from frequent selective pruning. Prune back in late-winter to encourage a more compact shape and strong flush of fresh spring foliage. Requires moderate watering in a well-drained soil.