Haworthia coarctata - Haworthiopsis coarctata is usually found growing on rocky terrain, rather than on open grass-lands. It forms dense clusters...
Haworthiopsis coarctata, also called as Haworthia coarctata, Aloe coarctata, Catevala coarctata, Haworthia reinwardtii subsp. coarctata, Haworthia reinwardtii var. coarctata, Haworthiopsis reinwardtii var. coarctata, is a species in the Haworthiopsis genus. This species was described by Gordon Douglas Rowley in 2013.
IDENTIFY HAWORTHIOPSIS COARCTATA - HAWORTHIA COARCTATA
Haworthia coarctata is native to Cape Provinces. It was introduced into
Mexico Central, Mexico Southwest.It is usually found growing on rocky terrain,
rather than on open grass-lands. It forms dense clusters and often grows in
full exposed situations and, possibly because of vegetative reproduction,
populations tend to be very uniform.
It is a small evergreen tall rosette-succulent that forms dense clusters. The leaves are arranged in elongated rosettes, 4-6 cm long, triangular-lanceolate, tips incurved, shining green, turning red in full-sun with greenish white slightly raised, rounded tubercles in longitudinal or sometimes transverse rows.
Haworthiopsis coarctata blooms in spring to summer from the up to 30 cm tall, usually unbranched, few-flowered inflorescence that arise from the mature rosettes. The flowers are white tubular with greenish-brown midrib.
HAWORTHIOPSIS COARCTATA - HAWORTHIA COARCTATA 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:
Haworthia coarctata grow best in full or partial sun. It do best in an east or west facing window where they get a few hours of direct light daily, and bright indirect light through the remainder of the daylight hours. A south facing window would also be acceptable, but may be too bright unless the sun is lightly filtered through sheer curtains. If you grow the plant on a windowsill, turn the plant occasionally to ensure that all sides of your plant get enough sun.
In the middle of summer, keep it bright but skip the very hot, and burning western sun, which can fry them. Also, the dramatically changing amount of the sunlight is a stress source for your plants. If you are going to move your outdoor succulents to the interior places, do it gradually.
The darker and more intense coloration and the very compact growth which many growers find most attractive are developed from brighter light conditions. In insufficient light, leaves will elongate and plants will lose the richness of their colors.
The plants grow also very well under artificial lights, though they prefer more light intensity than provided by the standard fluorescent grow lights. A mixture of warm white and cool white bulbs gives both good light intensity and color balance.
Temperature:
Haworthiopsis coarctata make good accent plants on porch, patio, or deck and can be grown outdoors during frostfree periods. Be careful when you move plants outdoors. If they have spent the winter without much direct sunlight, don’t immediately put them into full sun outdoors or they may sunburn. Gradually move them into more direct light over a period of a few weeks. They can tolerate temperatures into the low 4 °C, especially if they do not have continuously wet soil, and they will survive high temperatures into the low 37°C, especially if they are somewhat shaded and have good air movement.
During the spring and summer months, your indoor succulents grow best at temperatures of between 65 and 80°F (18-27°C). During the winter, a few degrees lower will be ideal. You can grow the plants outside if you have warm summers of at least 19°C or 20°C.
Substrate and growing media:
Haworthia coarctata can be grown in virtually any type of container, including plastic pots, ceramic, or terra cotta. Terra cotta pots breath and release soil moisture faster than ceramic or plastic. Be sure that your containers have drain holes, and, if you use saucers, be sure that you empty any standing water promptly.
When grow in a pot or container, it is important to choose the right size. As a rule of thumb for all succulents, choose a pot that is just larger than the root ball. This helps to ensure soil doesn’t stay too damp. Don’t place your plant in a pot without the drainage holes on the bottom.
The soil mix should be well drained. A good commercial potting soil should be mixed with equal amounts of drainage material. Several options exist, including perlite, aquarium gravel, poultry grit, or horticultural pumice. Do not use sand as it is too fine and clogs the pores in the soil. If using a peat-based potting soil, remember that peat decomposes in a few years, resulting in an unhealthy soil.
Haworthiopsis coarctata are slow-growing and can stay in the same pot for years, there may be a tendency to forget to repot into fresh soil, a practice which should be done every 2-3 years. It is better to repot periodically as needed to provide additional space for the expanding plant rather than put a small plant in a large pot expecting the plant to eventually fill the container.
Watering:
Haworthia coarctata can be watered weekly in the summer months; less frequently in the winter. The soil should dry between waterings. Prolonged wet soil, especially when it is cool, there is low light intensity, and/or the plants are not actively growing, can lead to root rot.
If you notice that leaves are falling off, are wilting, turning yellow, or turning brown, it could be an issue with watering. Too much watering or too little watering can all affect the health of your plant. If the plant looks unhealthy, unpot it and inspect the roots. Remove any weak or decayed roots, even back to the stem of the plant. Allow the plant to lie out unpotted for a week, then repot into fresh soil and begin watering carefully until it is apparent that the roots have reestablished and the plant has regained its health.
Fertilizer:
Haworthiopsis coarctata is a slow-growing plant, and it does not require much fertilizer. For optimum growth, fertilization is a good idea. Feed only with a dilute fertilizer and only during the active growing season. Fertilizing can be significant especially if you keep your plants indoors.
Pests and diseases:
Haworthia coarctata are generally free of most pests. The one exception is mealybugs, which can be a common problem but easily resolved by physical removal or with standard houseplant insecticides. The most significant disease problems are root rots caused by poor soil or too much moisture. Occasionally such root rots can move into the plant stem resulting in the death of the plant.
Propagation:
Haworthiopsis coarctata are usually propagated by offsets. This is the quickest and most common method of propagating these plants. The plants cluster from the base; the new young plants are often referred to as offsets or “pups”. As soon as the new young plants are formed by the parent plant, they develop roots. Use a sharp knife or shears to remove the offset as close to the mother plant as possible. Include as many roots as possible when making the cut. Allow the plantlets to dry before watering or withhold water for the first few days after potting.
The plants can also propagated by leaf cuttings. Individual mature leaves are carefully cut from the stem, along with a slight bit of attached stem tissue. Once the wound has dried, the leaf can be put into a well drained soil medium and, in many cases, one or more new plants will slowly form from the severed leaf. This practice is not commonly employed by the average hobbyist, but experienced nurserymen use it to propagate rare or slow growing plants.
It can also be readily grown from seed, though seed is not commonly available except through specialist dealers in succulent plant seed. Seed should be sown in a well-drained soil mix and the soil kept moist until germination, usually within 1-2 weeks. The soil should not be allowed to dry significantly while the young seedlings are getting established.
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