Kalanchoe gastonis-bonnieri - Donkey ear plants is a fast growing succulent perennial or biennial plant which grows to 12 to 18 inches tall and wide..
Kalanchoe gastonis-bonnieri, also called as Donkey ear plants (the resemblance its leaves share with donkey’s ears), Palm beachbells, Giant Kalanchoe, Good Luck Leaf, Leaf of Life, Life Plant, Miracle Leaf, Sprout Leaf Plant, Sprouting Leaf, Tree of Life, Bryophyllum gastonis-bonnieri, Kalanchoe adolphi-engleri, is a species of the genus Kalanchoe. This species was described by Raymond-Hamet & Joseph Marie Henry Alfred Perrier de la Bâthie in 1912 and was named in honor French botanist Dr. Gaston Bonnier.
IDENTIFY KALANCHOE GASTONIS-BONNIERI - DONKEY EAR PLANTS
Kalanchoe gastonis-bonnieri is native to Madagascar. It is found growing in rocky areas of northwestern Madagascar. It is invasive in many places around the United States and has been found growing in almost all states including, Florida, Illinois, Alabama, California, etc.
It is a fast growing succulent perennial or biennial plant which grows to 12 to 18 inches tall and wide with ovate-lanceolate leaves that can be enormous, from 12 to 20 inches long. The leaves are bronze-green covered with a waxy white covering to look overall gray-green and splotched with maroon-brown blotches. These leaves often have small plantlets developing along the leaf margin.
Donkey ear plants blooms in the fall or early winter season from the terminal inflorescence that grow to a 2 to 3 foot tall stalk that branches near the top with several clusters of pale peach-colored buds that darken and become the calyces holding the darker reddish-salmon petals with flared tips and yellow interior. The whole flowering process lasts nearly 2 months at which point the “mother plant” declines but the many plantlets on the leaves develop rapidly to bloom within 2 to 3 years.
KALANCHOE GASTONIS-BONNIERI - DONKEY EAR PLANTS CARE AND CULTURE
Cultural information should only be used as a guide, and should be to be adapted to suit you. Your physical location; where you grow your plants, how much time you have to devote to their care, and many other factors, will need to be taken into account. Only then can you decide on the cultural methods that best suit you and your plants.
Light:
Kalanchoe gastonis-bonnieri can grow in full to partial sun, a southern, eastern or western exposure. During summer do not allow direct sunlight because its leaves who contain lots of water will get sun-burned. Direct sunlight from fall till early spring will not harm your plant.
Temperature:
Donkey ear plants grow best at the optimum temperatures range between 64 and 68 °F (18 and 20 °C) day and night. If temperatures are under 61 °F (16 °C) day and night, this can delay plant growth and development and may cause blind eyes or no flowering. It is very sensitive to cold and it takes only a few hours of near 40 °F (4 °C) for the plant to die. Avoid placing it near drafts or cool windowsills.
Substrate and growing media:
Kalanchoe gastonis-bonnieri grow best in a hanging baskets with the rooting media and subsequent growing media that are fast draining and high in organic matter. Their root system is extremely sensitive and it would be advisable to use clay pots that allow better aeration of the roots. Ensure excellent drainage by placing pebbles at the bottom of the pot and use light soil containing lots of peat moss, perlite and sand.
The plants love to be alone in small pots. However, the larger the pot the larger the leaves but the size of the top will hardly affect blooming or rate of growth. Avoid planting companion plants in the same pot and repot each spring adding fresh soil.
The pH is also critical and should be in the 6.0 to 6.5 range. The plants are sensitive to zinc deficiency, which can be aggravated by high phosphorous. But at this pH range, both zinc and phosphorous should be available at suitable levels. They also have high calcium requirements.
Watering:
Donkey ear plants like water only when the top level of their soil is dry. Wet soil should be avoided. The most common mistake people make is overwatering which can cause the roots to rot. You can easily prevent this by allowing your plant to dry out completely before watering. The foliage should be kept as dry as possible and, therefore, using a system, such as drip irrigation, is best.
Fertilizer:
Fertilize the plants with ratio 3:1:3 (N:P:K) until bud formation. During the flowering period, the ratio should change to 2:1:4 or 3:1:4. It may be necessary to make supplemental applications of major elements, including calcium and magnesium and trace elements, particularly iron and manganese.
Pruning:
Little or no pruning is necessary for many years. If needed, pruning should be done immediately after flowering. When pruning, simply pinch or clip them back where they attach to the stem. Pinch out dead flowers regularly to stimulate new flowers to form.
Many of the new cultivars have good basal branching, so no pinching is required, which was a very labor-intensive project necessary with the older cultivars. However, if a cultivar requires pinching to encourage branching, today the plants are normally treated with growth regulators.
Rest period:
When the flowers start to die back, cut them off and let the plant rest. After deadheading, you should reduce watering as the plant will need less water during this resting period. Soon you will notice new buds and your plant will bloom again. This change in blooming and resting cycles will go on throughout the year irrelevant to seasons.
Pests and diseases:
Kalanchoe gastonis-bonnieri are resistant to disease and insects but if kept outdoors, could eventually be affected by aphids, scale, spider mites and nematodes. Common symptoms include apart from insects themselves on the crossing of the stems or the undersides of leaves, the presence of honeydew on leaves, creased faded leaves and webs, or leaves that look torn or bitten. Prefer non-toxic treatments because the plants are very sensitive to certain ingredients used largely in insecticides widely used. If you decide to buy a chemical insecticide do tell the nursery that you are planning to use it on a plant.
Propagation:
Donkey ear plants is usually propagated by cuttings. Cuttings normally root in about three weeks during the summer months and four to six weeks in the winter at temperatures of 70 to 74 °F (21 to 23 °C). Using bottom heat may increase rooting speed.
COMMENTS