Garden Blog - Top Tropicals
Date:
Curious Gardenia graft
Q: I was told to send you pictures of my hybrid gardenia tree. About 6 months ago the new growth on the top of one side became crinkled. It doesn't get straightened out either. It seems like it just stays like that until it falls off. Any ideas?
A: Your plant is not sick at all. This is what happened...
Your gardenia is a grafted variety. Gardenia varieties (Gardenia jasminoides hybrids) are grafted on rootstock of Gardenia thunbergia (this species is nematode-resistant and used for rootstock especially in Florida).
The side branch that you call "crinkled" is actually the rootstock (Gardenia thunbergia) growing from UNDER the graft. Gardenia thunbergia has naturally "wavy" leaves.
If you follow this branch to its base, you will see where it starts - right below the graft. This happens very often.
You need to remove this branch altogether, from the point where it starts.
It sucks energy from the plant and eventually may take over the whole plant.
Photo above: Gardenia thunbergia with curly leaves
Date:
How to make the whole garden fragrant.
List of the most fragrant yet easy to grow plants
Q: Dear toptropicals, thanks for the great database on tropicals plants! I really enjoy browsing your web site and I am planning on completing my collection by purchasing some plants from your shop. I am particularly looking for fragrant plants that make the whole area fragrant. Can you provide a list of recommended fragrant plants that bloom throughout the year round? I currently have: murraya, plumeria, michelia alba, figo, champaca, rangoon creeper, honeysuckle, jasmine, stephanotis, Arabian sambac, brunfelsias.
A: As a must-have additions to your impressive fragrant plant
collection, we can recommend the following rare fragrant plants below. These are
our favorites that are easy to grow and free-flowering. Since they flower at
different times, they will add fragrance to your garden throughout the year.
Aglaia odorata - Chinese Perfume Plant
Aloysia virgata - Almond Bush
Beaumontia grandiflora - Easter Lily Vine
Brugmansia Variegated Orange Angel Trumpet
Brunfelsia magnifica floribunda Jims Giant (very fragrant and very
compact!)
Cananga fruticosa - Dwarf Ylang-Ylang
Cerbera x manghas hybrid - Enchanted Incense
Cestrum nocturnum - Night blooming jasmine
Crinum Queen Emma - Spider lily
Eucharis grandiflora - Amazon Lily
Euodia hortensis - Scented Evodia, Golden False Aralia (very fragrant
leaves!)
Hedychium coronarium - Butterfly Ginger
Hiptage benghalensis - Helicopter Flower
Jasminum dichotomum - Rose Bud Jasmine - very fragrant!
Magnolia virginiana - Sweet Bay
Millettia reticulata - Evergreen Wisteria
Mirabilis jalapa - Four oclock plant - super fragrant!
Osmanthus x fortunei - Fortunes Tea Olive
Oxyceros horridus- one of the most intense perfume fragrances!
Radermachera Kunming - Dwarf Tree Jasmine
Satureja Viminea - Kama Sutra Mint Tree - strong mint fragrance
Sclerochiton harveyanus - Blue Lips, Mazabuka - lavender fragrance
Solandra maxima - Variegated Butter Cup
Telosoma cordata - Pakalana vine
Wrightia religiosa - Sacred Buddhist
You may consider many varieties of gardenias, and the most rewarding
are:
Gardenia vietnamensis - Vietnamese Gardenia
Gardenia Aimee Yoshioka (First Love)
Gardenia posoqueria - Shooting Star Gardenia
Gardenia taitensis Heaven Scent (double flower)
Gardenia taitensis Tiare Tahiti, single flower
Gardenia tubifera Kula - Golden Gardenia
To see the full list of fragrant flowers, follow this link.
Date:
Tahitian Gardenia
Q: I am interested in your Tahitian Gardenia and I would love to try and grow this plant in a large container/fabric pot. The soil here where I live is terrible as it's hard rock, clay, and sand! So I'm not sure if amending the soil would help to plant in the ground? Can you tell me if this will do okay in a container or best in ground? I live here in Las Vegas, NV (zone 9a). Any information would be great to help me make a this decision, I love the selection of cool tropical plants you offer! Also my daughter does Tahitian/Polynesian dance and this would be a cool "topping on the cake" if she could have a live Tiare flower in her performances.
A: Tahitian Gardenia will be doing best if grown in container in your
area. In its natural habitat, it grows full sun but also it enjoys mild weather
conditions and high air humidity. All gardenias prefer acidic soils. In your
area, if planted in the ground, it may be exposed to some harsh conditions:
too high temperatures, too hot sun, dry air, and as you mentioned - heavy clay
and sandy soil. You can enjoy this plant grown in container, which can be
moved as needed away from too much sun during summer months. Use well-drained potting mix. Use plastic pot, do not use fabric or clay
pots - soil will dry out too quickly.
Also remember to fertilize this plant on regular basis with a liquid
fertilizer SUNSHINE Pikake - Fragrant Flower Booster.
Grow gardenia in full sun or semi-shade during the hottest months. You may
spray it with pure water if the air too dry and hot. Enjoy your Tropical
Beauty and good luck!
Date:
The Flower of Gold
By Onika Amell, tropical plant specialist
Q: I am concentrating on adding more fragrance to my garden. I've had great success growing gardenias and I have many different varieties, but their flowers are all white, and I would like to add some colors to my garden too. Are there any gardenias available in different colors? I live in Waipio Acres, Hawaii.
A: Meet the very rare and highly fragrant, tropical Gardenia tubifera Kula or Golden gardenia. Kula flowers change color as
they mature, which is a unique feature! Kula flowers start out as cream,
then change to yellow and finally to a beautiful gold. In addition to the
spectacular flowers, this gardenia also has beautiful, leathery, deep green
foliage.
This is a slow-growing and compact plant. Like all the other members in
the Gardenia family, the Golden gardenia will do best in an acidic,
well-drained, and fertile soil. It will appreciate a good deal of direct sunlight but
will be very happy if provided with midday and afternoon shade. As with with
gardenias, the more sunlight the more flowers.
It will eventually grow into a rounded shrub if left unpruned, but also
can be trained into a small tree, maintainable to a height of under 7-8
feet. Blooms will appear from spring onward. Prune after flowering, this will
encourage more flowers in a few months.
Gardeners living in colder areas, do not fret. Gardenias make perfect
container plants and can be grown indoors in colder climates. Just be sure to
provide high light when bringing them indoors.
The fragrance and changing colors of a Gardenia Kula is unforgettable.
They are most fragrant near sunset and during early evening hours. Plant them
near walks and patios where their lovely fragrance can be enjoyed.
This
rare tropical Gardenia is sure to be a conversation piece in any garden.
Great collector's plant!
Recommended fertilizers:
Pink N Good Daily Plant Food - Flower Booster
Tropical Allure - Smart-Release Booster
Limited time special offer:
Instant $5 OFF Golden Gardenia!
Date:
Hedges
with Benefits
Reference Chart
Large and fast growing
Tithonia diversifolia - Sunflower tree
Acacia farnesiana
- Sweet Mimosa
Calliandra
surinamensis - Powderpuff
Aloysia virgata
- Almond Bush
Dombeya x wallichii - Tropical Hydrangea
Cornutia grandifolia - African lilac
Gmelina
philippensis - Parrots Beak
Hibiscus
mutabilis Cotton Candy - Mallow Hibiscus
Senna alata -
Empress Candle, Candelabra Plant
Medium or easy-trim
Acalypha hispida - Cat tail, Chenille plant
Bauhinia galpinii - Pride of De Kaap
Cestrum nocturnum
- Night blooming jasmine
Dombeya seminole
- Tropical Rose Hydrangea
Gardenia thunbergia - Forest
gardenia
Hamelia patens - Fire Bush
Hibiscus variegated
Snow Queen
Jasminum sambac
Maid of Orleans
Ochna integerrima
- Vietnamese Mickey Mouse, Hoa Mai
Odontonema callistachyum - Lavender Butterfly Bush
Odontonema cuspidatum - Firespike, Red
Rondeletia
leucophylla - Panama Rose
Tecoma stans - Yellow Elder
Short or slow growing
Aglaia odorata - Chinese Perfume Plant
Allamanda
schottii - Dwarf Allamanda Bush
Brunfelsia pauciflora Compacta - Dwarf Yesterday-Today-Tomorrow
Clerodendrum
incisum - Musical Note
Calliandra schultzii -
Dwarf calliandra
Gardenia
vietnamensis - Vietnamese Gardenia
Leonotis leonurus
- Lions Ears
Neea psychotrioides - Pigeon Plum, Hoja de Salat
Plumbago auriculata Imperial Blue
Garden Specimens
Combretum constrictum Thailand, Ball of Fire
Caesalpinia
pulcherrima - Red Dwarf Poinciana, Bird of Paradise
Clerodendrum
quadriloculare - Winter Starburst
Euphorbia
leucocephala - Snows of Kilimanjaro, Pascuita
Gardenia nitida - Shooting Star Gardenia
Hibiscus schizopetalus - Coral Hibiscus
Jatropha integerrima compacta
Kopsia fruticosa - Pink Gardenia
Malvaviscus x penduliflorus
Variegata - Summer Snow
Mussaenda philippica
x flava - Calcutta Sunset (Marmelade)
Plumeria pudica - Bridal Bouquet
Semi-Shade to Shade
Clerodendrum bungei - Glory Bower
Clerodendrum
paniculatum - Pagoda Flower
Eranthemum pulchellum - Blue Sage, Lead Flower
Clerodendrum
speciosissimum - Java Glorybower Mary Jane
Justicia carnea
- Pink Brazilian Plume, Jacobinia
Magnolia figo -
Banana Magnolia
Megaskepasma erythrochlamys - Brazilian plume
Thunbergia erecta - Kings Mantle
Tibouchina lepidota - Ecuador Princess, Jules Dwarf
Edible Hedges
Eugenia uniflora - Black Surinam Cherry Lolita
Camellia sinensis
- Tea Leaf
Hibiscus
sabdariffa - Flor de Jamaica, Karkade Sorrel
Laurus nobilis - Bay Leaf
Manihot esculenta
- Yuca Root
Nashia inaguensis
- Moujean Tea, Bahamas Berry
Sauropus androgynus - Katuk, Tropical Asparagus
Sauropus Variegata - variegated Katuk
Date:
Growing gardenias indoors
From Brian B, WI: Just wanted to share this photo of one of the plants my parents got from you 3 months ago.
Q: Gardenia taitensis is my favorite gardenia. I would need to keep it indoors under a grow light. Is it worth trying to grow indoors or is really difficult? If so, can you recommend and indoor plant that has big fragrance and blooms often?
A: When growing gardenias indoors, four most important factors must be taken in consideration:
1. Bright light (Southern window and/or proper lighting set up)
2. Proper watering (gardenias love water, but roots are very sensitive to excessive water)
3. Rich organic soil with perfect drainage characteristics, regular feeding with high phosphate component and micro-elements containing Iron or Ferovit.
4. Insect control (inspect underneath leaves regularly and apply systemic or on-contact treatments as needed). See Top Tropicals video on easy insect control.
We definitely recommend Gardenia taitensis (both single and double flower varieties) for indoor culture. Another species, Gardenia vietnamensis, is even easier in cultivation as it takes wide range of conditions and may tolerate slight overwatering (unlike other varieties which are more sensitive). These three mentioned gardenias are somewhat tolerant to low light conditions. Under a proper care, they will grow successfully even in bright shade, however for blooming they require as much light as you can provide. Properly adjusted growing light may be helpful. You may refer to our article about indoor plant lighting in our magazine Tropical Treasures, Issue # 15, or website page.
Date:
The easiest to grow Gardenia
Gardenia (Kailarsenia) vietnamensis
by Onika Amell, tropical plant expert
One of the easiest and hardiest Gardenias in our collection is the Vietnamese Gardenia. This plant is much easier to grow than many other Gardenias. It can handle overly moist soils much better, is quite drought tolerant once established and has a high resistance to the typical Gardenia woes. It is hands down also the most cold hardy Gardenia in our collection!
CONTINUE READING >>
Date:
Gardenia flowers: how to prevent bud-drop
Q: My gardenia looks beautiful, but the flowers fall off of it before they even open up, the majority of them get this brown color at their base. Can you point me in the right direction.
A: There are 3 possible problems, either one, or a combination:
1) Lack of light
2) Too much water
3) Lack of micro-nutrients in soil
Try the following treatments:
- micro-elements SUNSHINE-SuperFood as foliar spray + drench rootball,
once a month, it will improve quality of the flowers.
- Silicon protection: SUNSHINE-Power-Si. This supplement has Silicon as
an active element (Si). Adding it to soil or/and over foliar spray can
immensely enhance plants' resistance to external factors and boost their growth and
health.
Make sure the soil is not soggy, reduce watering especially during
fall/winter.
Date:
Q: I am thinking about buying a Gardenia as a present for my mother's garden in Florida. What is the difference between grafted and non-grafted gardenias?
A: Gardenias are one of our finest shrubs, growing to a height of about six feet in warmer areas of the United States. They have very attractive, shiny evergreen leaves that are about four inches long and, each spring-summer, produce the loveliest of white flowers that are delightfully scented. In areas with alkaline soils, like Florida, only grafted gardenias can be planted in the ground: graft provides nematode resistance, tolerance to poor, sandy and alkaline soils, and healthy, dark green foliage. Grafted varieties have rootstock of Gardenia thunbergia - the most resistant species of all gardenias.
Check out our Gardenia varieties.
Date:
Healthy Plants: Q&A from Mr Booster
How not to kill gardenias?
Q: I have tried to grow gardenia in pots for years and never keep them alive. When i look on camellia websites they say fertilize potted plants twice a year. I'm confused as I tend to kill them with kindness haha. Also, if our tap water has high cal/mag and that stops the gardenia getting other nutrients why would I make up the feed with tap water? So confusing and online is mixed messages...
A: Gardenias are not the easiest plants to grow, however, they are easier in pots than in the ground: they prefer acidic soils, and in many areas soils are alkaline. The most important factor is balanced and sufficient nutrients. In the ground, plants have no limits to reach out to different elements by spreading their root system. In a pot, once all the good stuff is consumed, plants start suffering nutrient deficiency. This is why a balanced feeding program is important.
Generally speaking, Cal/Mag in tap water cannot be bad, because they are
essential elements, good for plants (in proper amounts). However, just
Cal/Mag is not enough. This is why you need a balanced liquid fertilizer for plants that prefer acidic soil.
Excessive Cal/Mag alone can create nutrient lock up, especially if they are chelated
with EDTA like in dry fertilizers, which are not fully accessible for
plants.
We recommend natural, Amino-Acid based fertilizers that are completely
consumed by a plant and are safe to use with EVERY watering, even in Winter. They
are scientifically formulated and cover all plant needs.
For your gardenias, you should use SUNSHINE Pikake - Fragrant Flower Booster.
Another important factor is proper watering. Gardenias like regular water
but don't like wet feet = well drained potting mix is a must, similar to Abundance professional growing mix.