African Milk Tree
The African Milk Tree, scientifically known as Euphorbia trigona, is a species of succulent plant native to Central America. It's referred to as a 'succulent' because it stores water in its thick and juicy stems. African Milk Trees are popular houseplants due to their interesting appearance and relatively easy care requirements. They also make beautiful and unique additions to any garden. With proper care, African Milk Trees can reach up to 5 feet tall indoors, and 12 feet tall outdoors. The plant produces green stems with outward facing triangular branches that are covered in spikes, with a white tint on their tips. Its stout leaves/branches are green and can sometimes bear small flowers.
African Milk Trees are considered drought-tolerant succulents. Water deeply but infrequently and allow the soil to dry out in between waterings. Water with lukewarm water when the soil is dry 1-2 inches deep. Water the soil directly and not the leaves which can encourage root rot. In the summer months, water more frequently, approximately every 2-3 weeks. During the winter the plants will need less water and should only be watered every 6-8 weeks.
African Milk Trees prefer full sun to light shade. Indoors, the plant will typically do best in a bright, south-facing window. If the light levels are too low, it will not thrive. Take view to give the plant enough bright, direct light and avoid scorching the leaves. During the winter months, place the plant in a brighter area, near a south or west facing window to make sure the leaves have enough light.
African Milk Trees prefer temperatures between 65-85°F (18-29°C). Too hot or too cold temperatures can cause the plant to experience stress. Avoid placing your plant close to sources of heat or air conditioning vents in the winter and summer months.
African Milk Trees are sensitive to high humidity and can be prone to root rot. It is best to keep the soil dry and monitor the humidity levels. It is a good idea to place a humidifier near the plant if you’re in a dry, indoor environment.
African Milk Trees cannot be planted in regular potting soil, they require a specific soil mix. Use a potting mix that consists of 50% regular potting soil, 25% perlite and 25% coarse sand. This soil mix will provide the plant with the drainage it needs and also retain enough moisture for the plant.
African Milk trees do not need to be fertilized often. Fertilize once a month during the growth period with a liquid fertilizer high in nitrogen and low in potassium. Too much fertilizer can lead to fertilizer burn which can cause yellowing of the leaves.
African Milk Trees are sometimes susceptible to aphids, mealybugs, scale, thrips, and whitefly. Inspect frequently for signs of pests and deal with them promptly. Aphids can be sprayed off with a strong spray of water or treated with a natural insecticide. Mealybugs and scale can be removed with a diluted solution of rubbing alcohol or neem oil. Thrips and whitefly can be treated with a homemade soapy dish detergent insecticidal spray, applied in the early morning or late evening. Treat in intervals of 1-2 weeks until the pest problem is no longer present.
African Milk Trees generally need to be repotted every 2-3 years, in early spring before the growing season begins. When the plant becomes pot bound and the roots are protruding from the bottom of the soil, it is a sign the plant needs to be repotted. Use a potting mix that is well-draining and repot into a container one size larger than the current one.
Pruning is not essential for African Milk Trees and can cause stress. When pruning is necessary, try to only remove unhealthy branches or leaves and no more than 10-15% of the total plant. Make sure to use clean and sharp tools, and sanitize them before and after use to avoid the spread of disease.
Mulching is not necessary, however, if you choose to use a mulching material it should be light and airy. Avoid mulches that could retain too much moisture like compost or bark and opt for crushed stones or pebbles.
African Milk Tree can be propagated by cuttings. Make sure to use the healthiest stems and to cut close to the root. Take a 4-6 inch stem cutting from the base of the plant and apply rooting hormone to the cut end. Place the cutting in a small pot of moist soil and make sure the soil is kept moist but not soggy. Place the plant in indirect sunlight and wait for new growth to appear in 1-3 months.
If your African Milk Tree is getting too tall and leaning in a particular direction, or if it is weak or brittle, you may need to provide some extra support. This can be done by installing a sturdy stake or trellis next to the plant and tying it gently to the support structure with soft ties.
African Milk Trees go through a period of dormancy or rest in the winter months. This is normal and the plant does not need as much water during this period. In the winter, reduce watering to once a month and water with lukewarm water.
Yes, this plant can be toxic to cats and dogs if eaten. Keep them away from the plant and to be extra safe you can use pet-friendly houseplant sprays which are made with natural ingredients and are 100% safe for pets.
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