Desert Rose: Trumpet-Shaped Flowers, Growing Methods, Precautions, and How to Make the Root Caudex Grow Bigger

Desert Rose, also known as Adenium obesum, is actually not a rose that grows in desert regions, nor is it closely related to or similar to roses. It is drought-tolerant and beautiful when in full bloom, and is often cultivated as an ornamental plant. So do you know what the growing methods and precautions for Desert Rose are? How do you make the root caudex grow bigger?

I. Growing Methods and Precautions for Desert Rose

1. Desert Rose is mainly propagated by sowing and cuttings. Sowing is best done in spring, using the spot-sowing method to make management easier after seedlings emerge. Before sowing, the growing medium must be sterilized. After seedlings emerge, be careful that the medium in the sowing tray does not become too wet, otherwise the roots may rot and cause the death of a large number of seedlings. Cuttings are best taken during the vigorous growing season. Cut stem segments to about 10 cm, dip the lower end in water to dilute the sticky sap at the cut, so as to prevent it from gumming up and affecting root development. They can be inserted into a sand bed or directly into sterilized growing medium, and will root in about 15-30 days. When propagating, it is recommended to use the sowing method, because this way the plant's root caudex can naturally swell and form a good plant shape. Cutting-grown plants cannot do this and will also greatly reduce their ornamental value.

2. In addition, during cultivation, Desert Rose branches tend to grow leggy, which affects the beauty of the plant shape; grafting can be used to change its form. At a certain height on the plant, all branches can be cut off in a certain shape, then the upper ends of the cut branches can be taken and grafted using the cleft grafting method. Grafted plants have a beautiful shape, and after flowering the flowering branches are compact and highly ornamental.

3. Desert Rose is relatively drought-tolerant, so do not water too much each time. If there is too much moisture, it easily causes root rot, and the branches also grow leggy, making pruning rather troublesome. In summer when temperatures are high, water according to the soil condition. Generally water once every two or three days, and there must be no water accumulation in the pot. In winter when temperatures drop, Desert Rose also enters a semi-dormant period. At this time, watering should be appropriately controlled, and care should be taken to keep the soil dry; watering once a week is enough. Appropriate drought is very beneficial to the growth of Desert Rose. [When Desert Rose enters its dormant period in winter, the leaves will gradually fall off; this is normal leaf drop, so there is no need to worry about it.]

4. Desert Rose relatively prefers phosphorus and potassium fertilizers, so supplement about once a month normally. During the vigorous summer growing period, sufficient fertilizer and water are needed so that the flowers produced can be lush and vivid. In addition, in combination with repotting once a year, some long-acting base fertilizer can also be appropriately applied in the pot, such as decomposed bean cake, bone meal, etc. Desert Rose relatively prefers phosphorus and potassium fertilizers, so supplement about once a month normally. During the vigorous summer growing period, sufficient fertilizer and water are needed so that the flowers produced can be lush and vivid. In addition, in combination with repotting once a year, some long-acting base fertilizer can also be appropriately applied in the pot, such as decomposed bean cake, bone meal, etc.

5. Pruning Desert Rose is also very important. If you do not pay attention to regular pruning and let it grow leggy, it can easily lose its ornamental value. After the flowering period is the best time to prune, and you can make choices according to personal preference. Note: more branches mean more flowers. If you want more flowers, you need to find ways to keep more side shoots.

Precautions for Growing Desert Rose

1. Desert Rose is quite susceptible to leaf spot disease, which in severe cases can cause a large number of leaves to fall off. It can be controlled with 25% carbendazim wettable powder at 500 times dilution, or 50% thiophanate at 1000 times dilution.

2. The main pest of Desert Rose is scale insects. When the infestation is severe, it causes all the leaves to fall off, the plant's growing points to die, and even the plant to die. When growing it at home, pay attention to observation, and once discovered, immediately wipe them off with a cotton swab dipped in water. During the egg-laying and hatching periods, you can also spray 1-2 times with 40% omethoate emulsifiable concentrate at 1000-2000 times dilution, or 50% fenitrothion emulsifiable concentrate at 1000 times dilution. [When carrying out pest and disease control, pay attention to medication safety.]

3. Key care points: [Good sunlight], [a temperature of around 30°C], [water only after the potting soil is dry], [moderate fertilization during the spring and summer rainy seasons], [repot and change the soil at the appropriate time]

II. How to Make Desert Rose's Root Caudex Grow Bigger

1. Watering

The watering principle for Desert Rose is: water when the soil is dry. This means you can observe its soil, and when it is on the dry side, water it once.

If you are worried that watering based on observation is not accurate, you can probe 2 cm to 3 cm deep into the soil with your hand; if it is still on the dry side there, then it is time to water. Note that when watering, water thoroughly, and do not let the surface be wet while the inside is dry, but also do not allow water accumulation, otherwise it is very easy to make Desert Rose's roots rot.

It is best to water in the morning or afternoon, and watering at noon is most taboo, especially at high-temperature noon combined with exposure to the sun; if you water at this time, the evaporated water vapor can scald the plant.

At the highest temperatures in summer, you can water once to twice with carbendazim water.

2. Soil

The soil for growing Desert Rose is best as sandy soil.

3. Fertilizing

Mainly use phosphorus-containing fertilizer, and in daily care you can apply some foliage fertilizer.

Besides growing Desert Rose's root caudex bigger to increase its ornamental value, pruning is also very important. In daily management, pay attention to reasonable pruning, which can prevent excessive loss of nutrients and also prune out a more beautiful outline.