Candelabra Cactus Stem Rot: A Guide for Beginners
What is Candelabra Cactus Stem Rot?
Candelabra cactus stem rot, also known as euphorbia stem rot, is a fungal disease that affects the tall, fleshy stems of candelabra cactus plants (Euphorbia lactea). It is caused by a fungus that is spread through splashing water, soil, and even peat.
Symptoms of Stem Rot
The first sign of stem rot is usually a brown spot on the top of a stem. The spot will gradually soften and spread, eventually causing the entire stem to die. Stem rot can be mistaken for corking or sunburn, but if the brown spot is soft, it is most likely rot.
Treatment for Stem Rot
Unfortunately, there is no cure for stem rot. However, there are steps you can take to prevent the disease from spreading and to save the healthy parts of the plant:
- Remove the infected stem. Cut off the entire stem at the base, being careful not to touch the healthy parts of the plant.
- Remove the rotted area. If the stem rot is only on a small part of the stem, you may be able to cut out the rotted area and save the healthy part. Be sure to cut away all of the rotted tissue.
- Propagate the healthy parts. You can propagate the healthy parts of the stem by cutting them into pieces and planting them in a gritty soil mix. Be sure to let the cut ends callous over before planting.
- Use cinnamon. Cinnamon has antifungal properties that can help to prevent the spread of stem rot. Sprinkle cinnamon around the open parts of the plant where you cut.
- Isolate the infected plant. Keep the infected plant away from other plants to prevent the disease from spreading.
Prevention of Stem Rot
The best way to prevent stem rot is to avoid splashing water and soil on the stems of your candelabra cactus. Water the plant at the base, and avoid using overhead sprinklers. Allow the soil to dry out between waterings, and ensure that there is proper air flow between plants.
Other Tips
- Be on the lookout for brown spots on the stems of your candelabra cactus, especially if they are growing close to other euphorbia plants.
- If you see any brown spots, remove the affected stem immediately.
- Keep your candelabra cactus in a well-ventilated area with good air circulation.
- Water the plant at the base, and avoid getting water on the stems.
- Allow the soil to dry out between waterings.
- If you have any questions about stem rot, consult with a plant expert.
By following these tips, you can help to prevent and treat stem rot in your candelabra cactus.
