Euphorbia trigona

African milk trees are succulents that can survive without water for long periods of time. However, if you forget to water your African milk tree for a month or more, it may start showing signs of being underwatered. You can easily identify an underwatered African milk tree by its shriveled, dry, and flat leaves. The lower leaves may dry up completely, turn brown and crispy, or fall off. The soil will also be completely dried out. To remedy this, give your African milk tree plenty of water by submerging the pot in water for 5-10 minutes. Once you feel moisture on the surface of the soil, the watering is done. Remove any dried out leaves to make room for new growth. On the other hand, overwatering can be fatal to an African milk tree. Too much moisture leads to root rot, which hinders the roots from absorbing nutrients and water from the soil. Overwatered African milk trees have yellow, swollen, and translucent leaves that may burst open. If not addressed, the leaves may turn brown or black and fall off easily. Check the soil to determine if overwatering is the issue. Saving an overwatered plant is difficult but not impossible. It is crucial to catch the problem early before significant damage occurs. Remove the plant from its pot, clean the wet soil from the roots, and check their health. Dark brown or black, soft, mushy, or slimy roots indicate root rot. If the majority of the roots are affected, it may not be possible to save the plant. In this case, remove healthy leaves and use them for propagation. If only some roots are affected, remove any unhealthy-looking roots, dip the remaining roots in fungicide, and repot the plant in fresh, well-draining soil. This process can help the plant recover and produce new growth in the next growing season.

To determine how often to water African milk tree, check the soil for dryness before watering. Use your finger or a moisture meter to gauge the moisture level below the surface. If the soil feels slightly moist, wait a few more days before checking again. In general, watering every two weeks in summer and once a month in winter is sufficient for most people. However, factors such as pot size and environmental conditions can influence the watering frequency. Refer to the section below for more factors to consider when determining how often to water.

When watering your African milk tree, there are a few things to keep in mind based on the environmental conditions. The size of the container and the type of soil you use will determine how often and how much water to use. Make sure the container has enough drainage holes to prevent excess water from pooling. Smaller containers hold less moisture, so they will need more frequent watering, while larger pots retain moisture for longer periods and require less watering. Avoid using an oversized pot, as this can lead to overwatering. When repotting, move to a slightly larger container, and choose a shallow one since African milk trees have shallow root systems. The watering needs of the African milk tree vary throughout the year. During the winter, when growth slows down, the plant requires less water as it's not using much energy. Additionally, the cooler air reduces evaporation, so the soil stays wet for a longer duration. On the other hand, in the active growing seasons of spring and autumn, the plant will need more frequent watering. The general climate of your location also plays a role. In humid and rainy areas, watering will be needed less often compared to dry and arid climates. Keep in mind that even within the same geographical location, conditions can change with the season and the use of indoor heating or air conditioning. If you have planted your African milk tree in the ground, it usually won't require additional watering beyond what it receives naturally through precipitation and dew. However, during prolonged dry periods, occasional watering may be necessary. In areas where the tree can only be grown in a container, it can be moved outside during appropriate temperatures in spring and summer, and brought indoors when temperatures start to drop. When the tree is kept outside in a pot, it generally needs more water due to increased sun exposure, even if it is placed in a shaded area.

To best water your African milk tree, soak it thoroughly and allow it to dry out before watering again. This plant can tolerate drought, so it's okay to let it become quite dry before watering. It's better to give too little water than too much. When watering, ensure the soil is thoroughly soaked throughout the entire pot. Instead of pouring water in one spot, go around the whole rim of the planter to ensure all sides of the plant get wet. The amount of water needed depends on the container size and soil absorption. Make sure the drainage holes allow water to drain out, and leave the drained water in the saucer for 20-30 minutes to absorb into dry soil pockets. Discard any excess water in the saucer to prevent waterlogging. Bottom-watering is also effective for the African milk tree. Place the pot in a saucer of water, allowing the soil to absorb moisture through the drainage holes. The top layer should be moist when enough water has been absorbed. Though it takes more time than top-watering, bottom-watering ensures an even distribution of water. The original habitat of the African milk tree experiences little rain, but when it does rain, the soil becomes thoroughly moist. To mimic this, bottom-water your plant when the soil is completely dry. Deep soil bathing is preferable to frequent light watering for the African milk tree.

The African milk tree requires full sun, described as above 6 hours of sunlight, or partial sun, which is about 3-6 hours of sunlight daily. It's vital to monitor how sunlight moves through your garden to find the ideal spot that offers a combination of light and shade, ensuring your plant's well-being.

Native to sun-drenched environments, the African milk tree thrives in similar conditions but can tolerate slightly less light. Sunlight is crucial for its growth; however, too much can cause damage, while too little sunlight may impede essential processes, affecting the plant's development. For indoor plants where natural light is insufficient, artificial lighting can be a beneficial alternative to support optimal growth. It's important to choose the right type of artificial light, determine the correct distance and duration of exposure to mimic natural conditions.

Symptoms of inadequate lighting in African milk trees include faster leaf drop, leggy or sparse growth, slower or no new growth, chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These signs suggest that the plant may be struggling with either too much or too little light, leading to potential health issues.

To address lighting issues for indoor plants, gradually move them to a sunnier spot to achieve at least 6 hours of direct sunlight daily or use artificial lights such as desk or professional grow lights. For outdoor plants, transition them gradually to a sunnier location to avoid sunburn. If obstruction from trees is an issue, consider pruning or transplanting smaller plants to a location with ample sunlight and good drainage. It's crucial to make these adjustments gradually to avoid stressing the plant and to ensure new growth is healthy.

The African Milk Tree, or Euphorbia trigona, thrives in a warm environment, optimally between 20 to 38°C (68 to 100.4°F). It prefers temperatures above 20°C (68°F) and requires adjustments to adapt to seasonal changes. During winter, temperatures should be kept above 15°C (59°F) to avoid the plant entering a dormant state or suffering from cold damage. If the outdoor temperature falls below the plant’s tolerable minimum, it's advisable to move it indoors, preferably near a south-facing window to ensure it receives ample sunlight. In case of insufficient natural light, supplemental lighting may be utilized. Watering should be reduced or stopped when the temperature goes below the plant's suitable growth minimum to prevent root rot, and outdoor plants should not be watered at all in low temperatures.

In low temperatures, the African Milk Tree becomes weak, may wilt, and is prone to root rot, especially when the temperature is below its suitable growth minimum. If exposed to mild frost, the plant might initially show no symptoms but could gradually wither after a week. To address frost damage or low-temperature stress, trim off the frostbitten areas, checking for root rot. If the roots are rotted, they should be cut off, and the plant may be propagated through cuttings. Then, immediately relocate the plant to a warmer indoor setting near a south-facing window for maximum sunlight exposure. Supplemental lighting can be used if natural light is insufficient.

During the summer, it's essential to keep the African Milk Tree below its tolerable growing temperature maximum to prevent cessation of growth, water loss, wilting, and susceptibility to sunburn. If the temperature exceeds this maximum threshold, remove any sunburned or rotten parts of the plant. Protect the plant from direct afternoon sunlight until it recovers and resumes growth. For plants experiencing root rot due to excess heat, cease watering until new roots develop, ensuring the plant's recovery and continued health.

Applying plant food to the African milk tree helps add nutrients to the growing medium. Even though the tree already stores water and nutrients, fertilizing during the growing season supports healthy growth. Additionally, fertilizing can also encourage mature specimens to produce blooms in the growing season.

The African milk tree only requires a small amount of fertilizer during the growing season, around 1-2 times a year. The best times to fertilize it are in spring and autumn, while avoiding winter and summer when it is dormant. If you have recently repotted the plant, be cautious with the amount of fertilizer you use and wait a few months before starting to apply it.

The African milk tree, like other plants, has a period of dormancy. During this time, it's best to avoid using fertilizer. Specifically, in the summer and winter when the plant stops growing, you should not apply fertilizer. Additionally, it's recommended to avoid fertilizing for the first few months after repotting in the spring.

When fertilizing African milk tree, it's important to use a liquid plant food specifically made for succulents and cacti. To prevent fertilizer buildup, dilute it with water to half-strength. Apply the fertilizer to the base of the plant and make sure to water the plant thoroughly, allowing any excess moisture to drain away.

When fertilizing African milk tree, using liquid plant food is easier, although granules can also be used. Follow the instructions on the packaging and remember to dilute liquid fertilizers to half-strength. Whether you choose granules or liquid plant food, always apply it directly to the soil. For granules, cover them with a thin layer of soil and water. The same goes for liquid plant food.