Diospyros whyteana — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Diospyros whyteana

Diospyros Whyteana

Updated · 29 observations
ON THIS PLANT

Diospyros whyteana (also known as the bladdernut, swartbas, wild coffee or umTenatane) is a small African tree of the ebony family. Bearing dark green, strikingly glossy leaves and creamy fragrant flowers, it is increasingly cultivated in Southern African gardens as an attractive and strong ornamental tree. It can attain a height of up to 6 m.

A note from PlantMom

Wild coffee shows good resistance to disease and is generally not susceptible to illnesses. In terms of care, this plant is fairly low-maintenance. When grown outdoors it requires minimal watering, and larger specimens usually do not need pruning. However, smaller plants should be pruned after they have finished blooming. Wild coffee is suitable for anyone with an outdoor space, like a garden or deck, and does not require a lot of care experience.

— PlantMom
CARE GUIDE

How to keep Diospyros Whyteana.

Light

Wild coffee favors locations that get ample daily sunlight, resembling its natural environment. Plenty of sun exposure promotes its best growth. Its vigor can suffer if lighting conditions stay poor for extended periods. At every stage of development, it prefers bright, sunlit conditions.

Water

Wild coffee, which is native to regions with infrequent rainfall, demonstrates a moderate tolerance to drought. For best results, it should be watered every two weeks to maintain hydration while retaining its evergreen foliage. Outdoor cultivation is ideal for this plant, especially in soil that mimics its natural cycle of alternating between wet and dry conditions.

Humidity

This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.

Temperature

Wild coffee is well adapted to the environment where it naturally grows and prefers temperatures between 50 and 95 °F (10 to 35 ℃). As the seasons change, careful adjustment of temperature conditions may be necessary to ensure optimal growth.

Fertilizer

Timing is important for fertilizing Wild coffee. Apply fertilizer in early spring and continue monthly until early summer. Fertilizer encourages attractive blooms and supplies energy during both dormant and active growth periods.

Pruning

Wild coffee benefits from pruning in early spring to improve its overall growth and health. By removing dead branches and thinning out crowded areas, more light can reach the plant, which enhances its development. Pruning also involves shaping the plant to manage its size. This practice not only promotes better air circulation but also reduces the risk of disease and encourages fruit production, aligning with the natural growth cycle of wild coffee.

CHARACTERISTICS

Botanical profile.

Plant Type
Tree, Shrub
Life Cycle
Perennial
Genus
Diospyros
Family
Ebenaceae
Hardiness Zone
6-9
Mature Height
6.1 m
Mature Spread
1.52 m to 3.05 m
Leaf Color
Dark Green
Leaf Type
Deciduous
Flower Color
White
Flower Size
1.02 cm
Bloom Time
Mid spring, Late spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Late summer, Early fall, Mid fall
Native Area
Malawi, Mozambique, South Africa, Zambia, Eswatini, Tanzania, Zimbabwe
ALSO KNOWN AS

Other names.

en Bladder-nut en Wild coffee en Umtenatane en Blackbark
FREQUENTLY ASKED

Reader questions.

How should I water my Wild coffee plant in the best way?

To ensure excellent root development, place a garden hose at the base of your plants. Avoid spraying the leaves directly, especially if they are outdoors in direct sunlight, as they will need more water. Alternatively, you can use bubblers or soaker hoses to moisten the roots of each plant. When adding or removing plants, use soaker hoses that cover the entire garden or bed to encourage deep root growth. After watering, drain any excess water and allow the soil to dry before watering again. It is best to water at ground level to prevent diseases. On a sunny day, consider spraying the entire bush with water. Whether your plants are potted or in the ground, remember that Wild coffee prefers deep watering rather than light sprinkling.

How many hours of sunlight per day should Wild coffee get to grow healthily?

In order for Wild coffee to grow well, it needs a minimum of 3-6 hours of sunlight daily. While most plants that can handle some sunlight can also do well in full sun, Wild coffee is more versatile because it requires less light for photosynthesis.

Do I need to change the temperature for Wild coffee at different stages of growth?

According to research, Wild coffee tends to show slowed growth when it is exposed to extended periods of higher temperatures, particularly during the development of axillary buds and the growth of main shoots. To promote robust growth after germination or transplanting, it is advisable to maintain a consistent and cooler temperature of around 65℉(18℃).

What should I do if I give Wild coffee too much or too little water?

If your Wild coffee is overwatered, it may exhibit several signs such as yellowing and wilting leaves, as well as a dull and unhealthy appearance. Mushy stems may also be present. When you start noticing these signs, it's important to adjust your watering schedule accordingly. Interestingly, wilting can also be a sign of under watering, which manifests as crispy and dry leaves. In such cases, simply checking the soil moisture and giving the plant a thorough watering can help. However, even with sufficient water, the plant may continue to look dry with yellow leaves due to damage to the root system. Once the root system has recovered, the yellowing should stop. If you keep a Wild coffee plant indoors, it's advisable to regularly check the moisture levels in the pot and avoid overwatering, watching out for any signs of black spots. If black spots are present, allow the soil to dry out by refraining from watering for a few days. Overwatering can lead to root rot, so if you notice discolored and slimy roots, it may be beneficial to transfer the plant to a different pot. Preventing root rot is crucial, so avoid excessively soggy soil. When planting your Wild coffee outdoors, ensure that you dig a little deeper and if you find the soil to be too dry, it may indicate underwatering. In this case, be sure to provide adequate watering to help the plant recover.

Can the sun harm Wild coffee? How can we protect Wild coffee from the sun and heat damage?

When moving wild coffee plants from indoors to outdoors, they can be easily damaged by direct sunlight. To prevent sunburn, it's best to gradually move the plants from a shaded area to a brighter spot. However, even plants that are used to the sun can still be harmed by extreme heat. In a heatwave, it's important to keep the soil consistently moist to help the plants withstand high temperatures. To protect sensitive wild coffee plants during extreme weather, consider moving container plants to areas with afternoon shade or using a shade cloth to provide extra protection.

How do I make sure Wild coffee stays warm during cold seasons?

Wild coffee can survive freezing temperatures when planted directly in the ground, as long as the temperature doesn't drop below 15℉ (-10℃) during winter. However, if planted in pots or containers, the roots need proper protection from the cold. This can be achieved by wrapping the container in a blanket or by bringing it indoors to shield it from the harsh winter weather.

How much water should I give to my Wild coffee plant?

The Wild coffee plant needs about a gallon of water on a regular basis. For potted plants, water them deeply until you see water dripping from the bottom of the pot. Then, wait for the soil to dry before watering again. You can use a water calculator or a moisture meter to track the amount of water you give your plants each week. Make sure to provide plenty of water during the flowering period, but allow the moisture to evaporate afterwards to prevent root rot. If you have Wild coffee planted outdoors and there is enough rainfall, you may not need to water it additionally. However, when the plant is young or newly planted, ensure it receives 1-2 inches of rain per week. As the Wild coffee grows, it can survive solely on rainfall. Only when the weather is extremely hot or there is no rainfall for 2-3 weeks, consider giving the plant a thorough watering during cooler parts of the day to protect it from heat damage. Additional watering will be needed during prolonged dry periods.

Should I make sure Wild coffee doesn't get too much sun?

Wild coffee benefits from bright morning sun and some full sun exposure, but it cannot handle the harsh, hot midday sun of summer. If you plant it in the ground, it will slowly adapt to the increasing intensity of the summer sun throughout the season. However, if you have a potted plant that has been indoors or in a protected location, it may get injured if you suddenly expose it to direct summer sun in the hottest part of the day. To protect the plant from the intense afternoon summer sun, you should either plant it or place it in a shaded area during midday. This shaded area can be created by taller trees and plants, a building, or a landscape feature.

If the temperature is too high/low, how will it affect Wild coffee?

Consistently high temperatures pose a greater threat to Wild coffee compared to consistently low temperatures. When Wild coffee is subjected to excessive heat, hormone triggers caused by heat stress reduce seed germination and photosynthesis efficiency. This is evident in the plant through wilting, leaf browning, and, in extreme cases, death. On the other hand, if Wild coffee experiences very cold temperatures, important plant functions like nutrient uptake and photosynthesis are halted, potentially leading to the plant's death. Even a single freezing event during the growing season can trigger a membrane phase transition, which can lead to a halt in plant functions and ultimately result in the death of the plant.

Should I water my Wild coffee plant more or less depending on the season or climate?

Proper care for Wild coffee plants involves providing adequate water depending on the season and weather conditions. During spring and fall, the soil should be kept moist but not soggy, allowing for alternating dry and moist conditions. In hot summer weather with limited rainfall, more frequent watering is needed to prevent drying out. Less water is generally needed during winter when the plants go dormant, with well-draining soil aiding in moisture retention. Once the plants start leafing out in spring, watering can be skipped as they rely on rain during their dormant period. Good drainage is crucial, especially during winter, to avoid ponding and ensure the plant's health. For potted plants, regular watering is necessary, especially during summer, with sufficient drainage to prevent cold and wet roots. Deep soaking the entire root system once or twice a week is preferable to avoid shallow sprinkles that encourage fungal growth. Additionally, it's important not to let the plants dry out completely even during dormancy. Overwatering should also be avoided to prevent waterlogged soil, which can be harmful during winter. Applying mulch can help reduce stress, conserve water, and promote healthy blooms.

What happens if Wild coffee doesn't get enough sunlight?

When Wild coffee doesn't get enough sunlight, it can show signs like pale green color or drooping, yellow leaves. Losing some leaves is normal, but if new ones aren't growing in their place, something is wrong. Furthermore, if the Wild coffee manages to grow in low light, the new growth is usually weak, pale, and easily attacked by insects. It is important to observe these signs and adjust the plant's lighting conditions to make a noticeable improvement.

What should I remember about temperature when dealing with Wild coffee?

To ensure the health of Wild coffee and promote successful budding, flowering, and new growth, it is crucial to maintain a consistent soil temperature. This can be achieved by implementing practices such as regular watering, applying mulch to bare soil, and planting the coffee plants in shady areas.

PLATES
Diospyros whyteana leaf
PLATE 01 · leaf
Diospyros whyteana leaf
PLATE 02 · leaf
Diospyros whyteana flower
PLATE 03 · flower
Diospyros whyteana flower
PLATE 04 · flower
Diospyros whyteana fruit
PLATE 05 · fruit
Diospyros whyteana fruit
PLATE 06 · fruit
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