Q: Last summer, I purchased a lovely desert rose shrub. I transplanted it into a terra cotta pot and placed it in a protected location to avoid frost damage. I just realized the sturdy stem is soft and squishy now. What went wrong, and what can I do to prevent this from happening again?
A: The Desert Rose (Adenium obesum) is a lovely and exotic-looking plant that needs very little care. The overall shape is akin to a well-trained bonsai tree, with an expanded trunk base and twisted limbs. Simple five-petaled flowers emerge in many shades of pink, white, red, and yellow in the summer.
In the summer, the Desert Rose thrives in full sun with regular watering. When the temperature drops to 55 degrees or below, you should drastically reduce your watering. It’s best to use a terra cotta pot because it allows water to drain fast. When repotting, use a cactus mix and avoid using a pot that is too large.
If your plant is being watered on a regular basis by seasonal rain, you may wish to relocate it to a dryer place. The plant will rot if the soil is damp for an extended period of time.
Is desert rose an indoor plant?
The plant also likes stable warm temperatures, which is why it is widely grown as an indoor plant in the United States (except for USDA zones 11 and 12). The plant blooms in the summer and produces beautiful pink, rose, or red flowers as well as bright green leaves.
Why are the leaves on my desert rose turning yellow?
A Desert Rose’s leaves may be affected by a variety of pests, causing them to turn yellow and eventually dry up. Mealybugs, a fluffy white insect that feeds on the vegetation, are one of them. If you come across these insects, kill them all with a cotton swab dipped in rubbing alcohol.
Aphids, small greenish insects, and spider mites, which are not visible but produce web-like coverings on leaves and buds, are also possible pests. Both bugs feed on the plant’s juices, causing the leaves to yellow, wilt, and fall off. To get rid of bugs in a small area, use a forceful jet of water. Spray the plant with insecticidal soap diluted at a rate of 5 teaspoons per gallon of water if the infestation is severe. As needed, repeat the spray every two weeks.
Fungal Problems
If a Desert Rose is cultivated in very damp conditions, it may develop fungal stem rot, which begins at the stem tip and spreads to the leaves, turning them yellow and brown. The stem eventually darkens or turns yellow, softens, and the problem moves down the stem toward the soil. To rescue the plant, trim back the afflicted section of the stem, removing the soft tissue and replacing it with healthy, firm tissue. To avoid illness spread, disinfect the knife or shears by cleaning the blade with rubbing alcohol after each cut.
How do you look after a desert rose?
Taking care of the desert rose Desert rose, like other succulents, requires constant watering, especially in hot, dry conditions. In the spring and summer, use a water-soluble or liquid fertilizer diluted to about one-third of the label’s suggested strength to encourage flowering.
Sunlight
Desert roses require a lot of sunlight, and a lack of light could be the reason why they aren’t flowering. Place the plant where it will receive at least five to six hours of direct sunlight per day, if not more.
Fertilizer
A desert rose doesn’t need much fertilizer, but it does need to be fed on a regular basis to ensure that it gets the nutrients it needs to blossom. Using a balanced, water soluble fertilizer, feed an outdoor plant two or three times during the spring and summer. During the spring and summer, feed indoor Adeniums once a week with a half-strength water-soluble fertilizer.
It may also assist to apply a phosphorus-rich fertilizer or bone meal to induce flowering.
Is Epsom salt good for desert roses?
Epsom salts are highly recommended by rose producers in particular. It not only makes the foliage greener and lusher, but it also generates more canes and roses, according to them. To apply Epsom salt to existing rose plants, either mix 1/2 cup of the salts into the soil surrounding the bush and water well, or dissolve 1/2 cup of the salts in water and use to moisten the soil around the rose bush. This is best done in the spring, when the buds are just beginning to open.
How long can a desert rose live?
The desert rose can live for more than 500 years. It has distinguishing qualities that allow it to last for decades. For example, its stem has a bloated base that continues to inflate over time and can grow up to two meters in diameter. The stem stores critical nutrients that the plant uses to nourish the other parts of the plant as the weather changes.
Measure the diameter of the stem to determine the age of a desert rose. Every millimeter symbolizes one year for this slow-growing plant. It’s a seasonal succulent that sheds its leaves when the season isn’t right. Surprisingly, the plant receives sufficient nutrients even when other plants begin to die due to extreme weather conditions.
Can I use Miracle Grow on desert rose?
I utilize the same starting mix for our plants that will be shipped. I use around a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of a third of Poultry grit is fantastic, but it’s too heavy to send cheaply. I use a commercial mix, Fafard 4P, for the basic mix, but any decent grade potting soil, such as Miracle Grow, Expert, or Jungle Growth, will suffice. To this, add a third of a cup of coarse Perlite by volume.
For permanent plants, this is the final mix…..
2/3 cup beginning mix, 1/3 cup poultry grit Poultry grit is available at any farm supply store. If you can’t obtain poultry grit, aquarium gravel will suffice; however, aquarium gravel is more expensive. If neither poultry grit nor perlite are available, a bag of Lowe’s pea gravel will suffice. You can probably guess where this is headed. Make sure there isn’t any water in the mix. The point is that we make do with what we have. Drainage, drainage, and more drainage come to mind.
To begin, soak your seed overnight. Fill a pot with the basic mix and make sure it has plenty of drain holes. Soak the mixture until it can no longer hold any more water. I use the end of a ball point pen to make the seed holes. Make these holes somewhere between 3/8″ and 1/2″ deep. Fill each hole with a seed and fill with potting soil or sand. To ensure that the mix is in excellent touch with the seed, press it down. Allow the mixture to almost dry before keeping it moist until ready to use.
The seeds germinate. With new seed, sprouts should appear within a week to 10 days.
Adeniums can be fertilized with any excellent garden fertilizer.
We use standard 10-10-10, Miracle Grow, or one of the big box knockoffs depending on what’s available. On some forums, it may be said that Miracle Grow and its knockoffs are ineffective for Desert Roses. Both of them are OK if you don’t anticipate them to work as foliar feeds like they do on other plants. Adeniums’ leaf covering limits uptake as a foliar feed. Instead, apply them to the soil. Organic fertilizer, particularly composted manure and fish emulsion, is also beneficial to adeniums.
Your little plants will let you know when they need to be repotted if they are in thin plastic pots. The plants will either split the pot or at the very least distort it. The underground section of the caudex is growing, which causes this. Raise the caudex about a half inch above the former soil line when transplanting these to larger pots. Trim any fine feeder roots that have been exposed as a result of the elevating. Raising exposes a light-colored ring that will shortly darken to match the remainder of the caudex.
Last but not least, a word on watering. Water is required for adeniums to grow and flower. During the summer growing season, we water ours at least once a week. They get very little water during the winter dormant season, no more than once a month. If the plant receives too much or too little water, the leaves will yellow and fall off. This is merely a desert survival mechanism that has no negative impact on the plant.
How do you save a dying desert rose?
Follow the stem of a yellowed leaf down to the roots. You can take a tiny section out and sprinkle cinnamon or garden lime powder on it to mend it if it’s partially or severely decayed. If you have black patches, you’ll need to pull up the entire plant and take off the rotting roots. Then, in a shady spot, hang it upside down and apply some lime paste or powder. You can try transplanting it once it has healed.
How do I know if my desert rose needs water?
In USDA zones 10 to 11, the desert rose has become a popular ornamental garden plant. The remainder of us in colder climates will have to grow Adenium indoors, giving the plant a break on the patio or deck during the summer. Plant care for desert roses can be tough and requires some understanding of the species’ life cycle.
For healthy plants with large crowns of brilliantly colored tubular blooms, follow these fundamental Adenium desert rose growing recommendations.
Adeniums are tropical succulent plants. They are distinguished from the rest of the class by the development of a caudex, or enlarged trunk. Succulent plants, whether they have leaves, stems, or roots, have some type of water storage mechanism. The trunk of a desert rose expands to preserve rainwater during droughts. Plant health is indicated by a thick trunk. A thin stem could signal that the plant needs more water.
The natural similarity of the desert rose plant to a bonsai plant, with a low stature when mature and a tidy canopy sitting atop the graded stem, is an interesting bit of desert rose plant information. Many gardeners seem to struggle with desert rose bushes, but they are actually rather simple to care for if you bear in mind Adenium’s water, temperature, and lighting requirements.