Garden Blog - Top Tropicals

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Q: I live in California and about a month ago ordered several plants from you, including fruit trees (Carambola, Mango, Avocado) and flowering trees (Xanthostemon, Adeniums, Champaca, Ylang Ylang). They were all doing well until I tried to move them into full sun, when they got leaf burn immediately. Ylang Ylang was doing great in a shade, but I repotted it from 1 gal into 3 gal and it is drooping leaves now. It has been very hot (over 100F) and dry (humidity is less than 25%). Any suggestions?

A: Hot summer can be pretty challenging time for establishing new plants. These are some guidelines to make your summer gardening more successful and rewarding.

1. You can order plants at any time, but keep your eye on your local weather forecast and try to chose cooler periods to schedule your plant shipments. Here at TopTropcals we monitor weather at destinations, and we can also delay shipment per your request until more favorable conditions.

2. During hot Summer months, many plants are still OK to ship, and to be planted, many species are heat tolerant. It's usually safe to ship most succulents, including Desert roses and Euphorbias. Some fruit trees are pretty easy too, like Loquats, Mango, Eugenias. Many flowering trees can take heat: Acacias, Clusias, Jatropha, Sausage Tree, Plumerias and many others. Check our full list of plants suitable for hot and dry conditions. Most jasmines, including Jasmine Sambac and Trachelospermum make also a safe choice for hot weather planting.

3. Use shade cloth or simply white sheets to protect young plants and new plantings from hot sun.

4. When establishing mail ordered plants during hot weather, keep them in shade for longer period of time than average recommended 1-2 weeks. Give them a chance to establish really well. In areas with low air humidity, try to create a simple mist system. It can be purchased in your local Home Depot for only $20 and set up takes only 10 minutes! It makes a big difference and can help you save many plants from hot weather stress.

5. Although it may seem that during hot weather plants need more water due to high evaporation, be careful with watering, and check soil with your finger before watering - don't water if it is still wet. Combination of "hot and wet" can be as harmful for the root system as "cold and wet" during winter. Protect root systems from overheating: covering black pots with white cloth will work. Remember when temperature is above 90F, most of plants slow down their metabolism, which means roots slow down or even stop pumping water and become more vulnerable to overwatering. For the same reason, do not hurry to step up into bigger container if roots haven't filled yet the existing pot.

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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?.

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Taurus - 4/20-5/20. Taurus is an EARTH sign ruled by the planet Venus. Venus is the planet that represents desire and beauty, regarded as the female embodiment of sexual love and human appetite, so Taurus plants often have gorgeous flowers and enticing fragrances and, occasionally, red fruit. It rules the internal sexual organs, the nose and sense of smell.

Because Taurus rules the throat and ears, the best plants for the Bull are often soothing to the throat, or may calm the digestive system after overindulging in the finest foods. Taurus is related to those things we want and value. It harmonizes various body systems, and influences the complexion and facial appearance. Also under Venus's dominion are the abdomen, kidney, thymus, and breasts. Venus-governed herbs are soothing and help to regulate the body's metabolism through the endocrine system. Taurus herbs are traditionally used to attract money and resources. Earthy Taurus sign is all about building a stable and comfortable foundation and can help you generate greater abundance and prosperity in your life.

Taurus Zodiac lucky plants - Aglaia, Cananga odorata (Ylang-Ylang), Artabotrys (Climbing Ylang-Ylang), Cerbera, Night blooming jasmine, Chonemorpha, Erblichia, Euodia, Hiptage, Iboza (Musk Bush), Anise, Lavender, Lonchocarpus Lilac Tree, Nutmeg, Parijat, Camphor Basil, Osmanthus, Funeral tree, Quisqualis, Satureja (Kama Sutra Mint Tree), Viburnum, Carissa, Murraya, Curry Leaf, Bunchosia (Peanut butter fruit), Eucalyptus, Lily, Vitex agnus castus (Blue Chaste Tree), Alstonia scholaris (Sapthaparni), Papaya, Maple, Jasmine, Guaiacum, Camellia, Ephedra, Fuchsia, Geranium, Spider lily, Gardenia, Magnolia, Plumeria, Paeonia,  Verbena, Clerodendrums, Apple, Pear, Apricot, Peach, Plantain, Olive, Grape, Pomegranate, Mango, Neem Tree, Cherry, Cypresses, all Berries, Raspberry, Asparagus, Mint, Clove, Roses, Stagshorn fern, Catnip.

For other signs information, see full Plant Horoscope.

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Desert rose winter care

Q: I purchased several packets of desert rose seeds last year. I now have 45 very healthy seedlings some of them in bud. Almost all of my seeds grew but I lost most of them when I rook them in during winter. I did not water them for a month , kept them in their pots and set them by the window. they either dried up and died or rotted and died. I noticed when you send me grafted specimens that you bareroot them. Is this a better way to keep them inside in winter, bareroot? I hate to lose these plants come winter time. Pls advise me. I live in Houston, Tx. where we get temps below 40 degrees and sometime a day or more of freezing temps.

A: Thank you for your question. Rot is pretty common problem with Desert Roses. We monitor our Adeniums closely and have a special set up of watering environment and schedule, in dedicated greenhouses just for them. Nevertheless - every now and then we see a rotten caudex and can't help it to say "oops! over-watered!" These plants are very sensitive to environment changes, especially when it comes to a combination of water and temperature. These are a few tips that should help you to reduce risk of plant loss to a minimum:

1) Use only well drained mix with much higher content of perlite than you would use for most tropical plants. For adeniums, we use mix with 30-40% of perlite in it, while regular mix has 10-15%.

2) Adeniums like alkaline soil, unlike most of tropical plants (hard to say what else likes alkaline... Ficus for sure!). This means, regular mix with high content of peat moss may cause root rot. To increase alkalinity, you may add dolomite. Here in Florida where we have natural supply of shell rock handy, it is easy to add some shell to a potting mix (shell sand, rather than quartz sand). We always add a few large shells on top of a pots with a big specimen. Besides increasing soil pH (making it more alkaline), shells look very decorative.

3) Water very carefully during cooler months. When it is hot (85-100F), excessive water usually won't harm adeniums: it will be partially used by a plant, and partially will evaporate. Especially be careful with water when temperatures drop below 65F - then tropical plants simply stop growing process and go dormant. Once adeniums start losing leaves, this is a sign to reduce watering to once a week to once a month, and in very small quantity (couple tablespoons per pot).

4) We do not bareroot adeniums for winter storage. They are not bulbs. Barerooting of this plant is recommended only during shipping. Adeniums can stay without soil for up to a week without hardly any stress, sometimes even longer.

5) We keep our big collection specimens on a roofed porch during winter, where level of light is very low. Last winter we haven't lost a single plant due to low light. They take shade pretty well considering minimum or no water. However bright light is always better - it creates healthier environment for a plant. We all know about space limitations for our large collections, especially in winter. So if you can afford a bright spot for adenium during winter - the plant will be lucky!

Adenium Summer Sale: 20% off plants and seeds!

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Aries - 3/21-4/19. Aries is a FIRE sign ruled by the planet Mars. Plants associated with this element and planet very often have thorns or prickles. They can be also spicy or bitter in flavor, or red in color.

Because Aries rules the head, eyes and face, the plants for Aries purify the blood, stimulate the adrenal glands, and/or are high in iron (Mars rules the mineral iron). Mars-ruled Aries is assertive, energetic and fearless. Mars rules the red blood cells, the muscles, and metabolic processes, as well as the motor nerves and the head. These plants help you when you want more get-up-and-go and the courage to take on the world.

Aries Zodiac lucky plants - Governors plum, Hibiscus Karkade, Tapioca, Mamey Sapote, Ruda, Baobab, Euphorbia, Acanthus, Aloe, Caesalpinia, Erythrina, Opuntia, Dragon Fruit, Pachypodium, Pomegranate, Chilli peppers, Syngonium, Begonia, Geranium, Red Sandalwood, Jamiaca pepper (Pimenta, Allspice), Camphor, Jujube, Anise, Red Roses, Tiger Lily, Impatiens, Calendula, Tarragon, Ginger, Coriander, Basil, Ruda, Amaryllis, Wild Indigo, Gooseberries, Sesbania, Campsis, Red Oleander, Maple, Schotia brachypetala, Momordica, Coffee, Amla , Ephedra, Red Kapok.

For other signs information, see full Plant Horoscope.

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Planting instructions for bare-rooted succulent plants

Q: I would like to order a few Adeniums from your selection. You website says "shipped barerooted". What do I need to know about potting these plants before I order?

A: Adeniums do not require much soil; large 4-5" wide caudex plant can be grown in 1 gal pot. After unpacking the plants, position it in a pot, size of root system. Use only well-drained soil with high content of perlite and/or sand. Cactus mix can be used too, although we recommend using our special TopTropicals professional soilless potting mix. Water once and keep in warm (75-80F) place in filtered light. Do not water again until soil dries on surface. Once the plant is established and starts growing new leaves (may take a few weeks), gradually move it into brighter light. Then you can start fertilizing it. You may place shells and lime rocks on top of adenium planting, as these plants benefit from slightly alkaline soils.

See Info sheet on Adenium care.
See full list of Adeniums.
See full list of Plumerias.
See full list of Euphorbias.

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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, Anethum graveolens (Dill), Barringtonia, Bolusanthus, Dioscorea, Grewia asiatica (Falsa), Hibiscus sabdariffa (Karkade), Iboza riparia, Lagerstroemia speciosa (Queens Crape Myrtle), Laurus nobilis (Bay Leaf), Lippia, Melissa, Catnip, Mint, Arugula, Piper betle, Piper sarmentosum, Psychotria, Syzygium aromaticum (Clove), Banisteriopsis, Papaya, Mesua ferrea (Ironwood), Momordica, Euterpe oleracea (Assai Palm), Jacaranda,  Magnolia officinalis, Pimenta dioica (Allspice), Osteospermum, Petrea, Plumbago, Clitoria, Eranthemum, Litchi, Cashew, Pecan, Nut trees, Cherries, Lavender, Myrtles, Sansiveria, Aloe vera, Blackberry, Honey suckle, Satureja, Vitex, Mulberry, Elaeocarpus, Clausena lansium (Wampi), Feronia elephantum (Bel Fruit).

For other signs information, see full Plant Horoscope.

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Leo Zodiac lucky plants

Leo - 7/23-8/22. Naturally, Leo is a FIRE sign ruled by the brilliant Sun. Leo's plants are usually large and gold or orange in color, have heart-shaped leaves or a radiating shape, or have association with victory (like the Bay Leaf). Leo loves this colorful and special spice, which is known for amplifying prosperity and abundance.

The part of the body ruled by Leo the Lion is the heart. Plants related to Leo are primarily associated with the cardiac system, but also with the spine, the thymus gland, and the eyes. They strengthen and tone the heart, regulate blood pressure, raise the spirits and have an uplifting effect. Keep in mind that all cardio-active medicinal herbs should be used only in consultation with a qualified professional.

Leo Zodiac lucky plants: Sunflower tree, Delonix, Hibiscus, Abutilon, Mahoe, Hawaiin Sunset Vine (Stictocardia), Campsis, Passion flower, Calendula, Mexican Flame Vine, Bay Leaf, Safflower, Mint, Rosemary, Ruda - Ruta graveolens, Marigolds, Sunflowers, Palm trees, Lemon and orange trees, Grapefruit, Dieffenbachia , Croton, Lemon Balm, Chamomile, Tarragon, Kaligottu (Stereospermum chelonoides), Bel Fruit, White Madaar, Peppers, Pineapple, Coconut, Anise, Heliotrope, Gingers, Lavender, Ashoka Tree, Dombeya, Jacquemontia, Lychee, Mulberry, Philodendrons, Macaranga, Anthuriums, Aphelandra, Orchid trees, Leonotis.

For other signs information, see full Plant Horoscope.

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Cancer Zodiac lucky plants

Cancer - 6/21-7/22. Cancer is a WATER sign and is ruled by the Moon. Cancer's plants generally have soft or Moon-shaped leaves, contain a lot of moisture, or are found near water. Oftentimes they have white, pale blue or pale yellow flowers. Cancer rules the stomach, diaphragm, and liver, so plants that aid digestion or affect the subconscious are associated with the sign of the Crab. Maternal Cancer also governs the breasts, the womb, and the ovaries. It rules all fluid secretions, including menstrual blood, fluids in the eye, and tears. The moon is often associated with conditions involving irregular periodicity: irregular menstruation and related moods, epilepsy, insomnia, hysteria. Lunar herbs tend to have white or yellow flowers and soft, juicy leaves. They often live in or near water. As they are so nurturing and warm, Cancer loves the homey smell of cinnamon. This sweet spice is good for gently heating things up; it also promotes movement and flow in life. Its familiar scent is soothing and calming for those who need a little retreat every now and again.

Cancer Zodiac lucky plants: Lilies, Eucomis, Magnolia, Nicotiana, Brugmansia, Dombeya, White flowers, Water lilies, Lotus, Maidenhair fern, Monstera, Cinnamon, Sage, Aloe, Lemon Balm, Bay leaf, Palasa - Butea monosperma, Acai, Mahogany, Mango, Banana, Apple, Pear, Geranium - Pelargonium, White roses, Solandra Chalice Vine, Butter Cup, Acalypha, Cornutia, Ruda, Oregano, Camphor plant, Grapes, Brunfelsia, Alocasia, Colocasia, Canna, Cyperus, Iris, Equisetum, Mangroves.

For other signs information, see full Plant Horoscope.

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How to get Clerodendrum to bloom?

Q: My Clerodendrum thomsoniae is not blooming. Actually it is not doing much of anything except putting out weak growth and small leaves. I purchased this plant May 26. 2015. Over the winter it was in a heated sunroom, at night 60 degrees, where it received some direct sun from the skylights. I reduced the water to prevent excessive leggy growth. I don't see how this plant can take full sun or even part sun. Temps here in Raleigh NC are 80-85 degrees and 65-70 at night, at the moment. I figured I would gradually expose it to more direct sun after being in a sunroom but the leaves burn. I had this plant in San Jose many years ago where it did quite well, blooming with no special treatment. So thought I'd give it a try again. Any advice?

A: Clerodendrums are all time favorites, appreciated by both gardeners and house plant collectors, for their showy, fragrant flowers and very easy culture. When growing Bleeding Heart (Clerodendrum thomsoniae), a few things should be taken in consideration:

1) Temperature.Like most clerodendrums, this plant is semi-decidious outside of tropics and goes dormant in winter. It may lose some or all leaves if temperatures drop below 60-65F. It is not too cold sensitive, the plant can even take some light freeze. However when it is not hot and humid, it slows down metabolism. This means, water should be reduced during cooler months.

2) Light. This plant can grow in both sun and shade like most clerodendrums - this is the beauty of this genus. However like with all flowering plants, more sun promotes more bloom. In shade, it will grow beautiful dark green foliage (leaves will be bigger than in the sun) on the account of flowering; in full sun leaves turn lighter color and sometimes may even get unattractive "faded" look, but flowering will be profuse. Also remember that Arizona full sun is different than New York full sun. Here in Florida, Bleeding Heart can take some full sun, but if exposed to sun all day long, leaves often get sun burn.

3) Acclimation. Also called acclimatization - this is a process when a living organism adjusts to environment changes. Acclimation is always the case when growing plants indoors, even in a sun room. When Spring comes, and especially when we start taking outdoors those plants that have spent a few months indoors, light level increases dramatically, and this may cause leaf loss, and leaf burn. It is not necessarily a bad thing, it is just a mechanism of acclimation. Example: imagine yourself after living in a warm tropical climate, moving to a cold country. For a while your body will feel discomfort from "too much cold", while native residents may feel comfortable. We call it "My blood has thinned after living in Florida" - and this is a physiological fact. And vice versa, if you are a Northerner, moving to hot climate may be a challenge; it will take a while until you get used to hot and humid tropical summers. Same thing with plants: during cooler and darker period, their body (leaves and stems) becomes "winter type", with some serious chemical restructuring. Immediate environment change, like bright light and high temperature, causes a shock to those "winter cells", and as a defense mechanism, the plant gets rid of those useless "winter" leaves, replacing them with new "summer" leaves with completely new chemistry and metabolism.

From what you described, you know your plants, and you know what you are doing. You did everything right by reducing watering in winter and gradually moving the plant into brighter light. You still may see some stress, and this is normal. If you patiently keep changing environment slowly, eventually your plant will generate new healthy "summer" growth, it will also improve more vigorous root grown which will help the plant to establish better and to be stronger. You will see larger, thicker leaves, and definitely some flowers.