Usually succulents are bullet-proof in the garden. Easy care, low water and dramatic they are great additions to the landscape. If you are having problems with fungal spots on yours after so much rain and cold you’re not alone. Still aloe, yucca and agave are worth growing as well as other succulents. Here is some useful information.
Succulents have demonstrated a wide tolerance to the fungi that cause leaf and some spots. Although they can disfigure plants they do very little damage despite their appearance.
There are other more serious fungal infections like anthracnose. It often appears as a moist tan colored rot with red, orange or pink pustules on the surface. Spots start small, but expand rapidly on both leaves and crowns. Once a succulents is infected the only treatment is removal of affected leaves. The application of copper fungicide may help to destroy fungal bodies. Root and crown rot don’t respond well to treatment and if you have planted your succulents in well draining soil there might not be much you can do about the excessive rain they’ve gotten recently.
Our Mediterranean climate is usually perfectly suited for the exotic looking family of Aloes. Some hail from the Arabian Peninsula and Madagascar but mostly they are native to South Africa. The spikes of their showy flowers supply much needed nectar for hummingbirds now when not much else is blooming.
There’s a variety for any space, large or small, container or tree-like. Here are a few of the types I’m seeing blooming right now in our area.
Aloe ferox or Cape Aloe grows best in full sun but tolerates a wide variety of growing conditions. They can thrive in very dry conditions or grow in an area that receives regular irrigation- a good trait given our recent wet winter. The foliage is hardy to at least 20 degrees and the winter flowers down to 24 degrees. Cape aloe grow to 6 feet tall and 3-5 feet wide so plan accordingly if you plant one of these spectacular reddish-orange to orange succulents. Cape Aloe occupies many habitats in its native Cape Region of South Africa and is listed on the endangered plant list.
Torch Aloe or Aloe arborescens blooms also in fall and winter. The bright yellow or red flower spikes cover this large clumping variety. This species has recently been studied for possible medical uses similar to the well known aloe vera plant. It’s the only other member of the Aloe family that is claimed to be as effective. It can survive much lower winter low temperatures than aloe vera.
Aloe vera has been grown for thousands of years in tropical climates. It is one of the most widely used medicinal plants on the planet. As a houseplant make sure the pot has plenty of drainage holes as they cannot tolerate standing water. Let them go completely dry between waterings and grow them in the very bright light of a south or west facing window.
The Soap Aloe or Aloe maculata is so tough that it can survive just about anywhere. My soap aloe aren’t blooming right now but others in better growing conditions are sporting showy flowers atop tall, multi branched stalks in colors ranging from red to gold. Once established this succulent needs only occasional water to look good. They grow in partial to full sun. The foliage gets 18 to 24 inches tall with the bloom spikes reaching 35 inches tall.
Every garden should have a variety of aloe to feed the hummingbirds in winter.