During rainy weather, succulents, which come from arid climates, may rot. Stems or trunks turn squishy and collapse. It may be possible to take cuttings from healthy top growth and restart the plants---as I did after one rainy winter with aeoniums. Fortunately, the rest of my succulents came through fine, despite double normal rainfall. After all, it's not water that causes roots to rot, but drowning from lack of oxygen (plus microbes).
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If succulents occupy low-lying areas of your garden where rain tends to puddle, and you don't want to move the plants to higher ground, use a patio umbrella to keep them from being soaked. Channel run-off with rocks, sandbags or trenches; and top-dress soggy soil with pumice to absorb standing water. |
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Above: Agave attenuata, crassulas, yuccas and other succulents thrive in Hilo, Hawaii, where precipitation averages 200+ inches a year. Rain bathes the roots continually, but they stay aerated and healthy because the soil is fast-draining lava rock.
Snails love rain...and succulents
While gardening between El Niño storms, I inadvertently threw a snail through the open window of a passing pickup truck. I realized this because, unlike previously tossed mollusks, I didn't hear the sound of shell hitting asphalt. If the driver had stopped, I would've apologized and explained that it wasn't personal---at least not where he was concerned.
The snail photo is from the first edition of Designing with Succulents, which means the snail would be 10+ years old had it lived. Of course it didn't.
Snails reproduce in abundance in wet weather and unless stopped chew unsightly holes in plants. This is truly a shame because succulents keep their leaves a long time. An environmentally friendly bait is Sluggo, but it's expensive, as are decollate (predator) snails---which in any case are not legal in every California county. The most expedient method, squashing underfoot, leaves a sticky residue on shoes. So I step on a leaf instead, which is one reason I grow nasturtiums. Set a snail on the ground, place a nasturtium leaf atop it, and step on it. If there's no crunch, find harder ground. But not your patio; snails stain.
Pumice absorbs moisture
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The best soil amendment for succulents is pumice, a lightweight crushed volcanic rock that aerates the growing medium and absorbs excess moisture. I mix pumice half-and-half with bagged potting soil for containers; and with equal parts compost and garden soil or decomposed granite for in-ground beds. [Learn more about pumice.] |
Related info
On this site:
How to Water Succulents These fleshy-leaved plants from hot, dry regions are designed to live off water stored in their leaves and tissues in order to survive periods without rainfall. But this doesn't mean you shouldn't water them at all...[Continue reading]
Learn about pumice. No other soil amendment is as widely used by succulent growers and collectors as pumice (crushed lava rock). Here’s why...[Continue reading]
Oh, No, My Succulents Froze! Will succulents recover from frost damage? It depends. Here’s how frost-tender succulents looked before temps dropped into the mid-20s F, and after...[Continue reading]
Winter Protection for Succulents: Products Soggy soil, dim light, high humidity and freezing temperatures can be death to succulents native to warm, arid climates. These items will help you get your succulents through cold, wet North American winters...[Continue reading]
On My YouTube channel:
Why Succulents Rot and How to Prevent It
Succulents and Too Much Rain, A French Solution
Want to protect your succulents from too much rain? Here’s how the Jardin Zoologique Tropical in southeastern France keeps their succulents from becoming waterlogged during seasonal rainstorms. Corrugated fiberglass panels atop metal bars tent the plants so excess rain doesn’t soak the soil. The structures are tall enough to allow good air circulation, and the panels are translucent, enabling maximum sunlight to reach the plants. The…
Your Succulent Garden After a Rainstorm, Checklist
Rain at last! Could the California drought finally be over? Well, no. It’ll take hundreds of years for underground aquifers to refill. The snowpack isn’t adequate for our future water supply. On the bright side, our gardens are looking glorious…even those with mainly drought-tolerant plants. Perfect conditions for succulents are good drainage, annual rainfall less…
How Rain Benefits Succulents
Don’t be surprised if after a good rain, your succulents look brighter and more vibrant. Here’s how rain benefits succulents: It provides dissolved minerals and washes away dust that inhibits photosynthesis; it dilutes and flushes salts and harmful chemicals that have built up in the soil from tap water; and it provides nitrogen essential to growth, especially…
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