Various pests can cause leaves to curl. A buildup of mineral salts can affect leaf growth and cause them to curl and develop brown tips. There are some reasons for yellowing leaves such as: If the entire plant is healthy and has a few yellow leaves showing up throughout the years, those are most possibly old leaves. The Dieffenbachia's broad, patterned leaves … The plant is over watered; the roots have rotted, and the plant is dying. Download your copy today! The bottom leaves are not getting enough light. Allow the soil to dry out a bit between watering, but never let it get completely bone dry. Then allow the excess to drain from the pot before putting it back on the plant tray. So much so that it reminds me of Dieffenbachia! Sucking insects, such as aphids, can distort leaves and cause leaf curling. The taller varieties should be … Cool drafts can cause the plant’s leaves to yellow and curl, so keep it in a spot with temperatures above 60 degrees. Also, plenty of light is needed to maintain vigorous growth. According to the ASPCA website, dieffenbachia is toxic to cats and dogs. Though annoying, that’s the normal growth pattern of this type of plant. Aphids are soft bodied insects that are normally found on the undersides of leaves and at the growing tips of the plant. So, they will grow well in bathrooms, kitchens, and other warm rooms where there is little natural light. Pour in enough water until it starts draining from the drainage holes. Well, there’s a reason for that funny name! They can grow to four feet high with a spread of up to two feet. Why are the leaves on my dieffenbachia turning yellow? Shriveled leaves caused by underwatering. However, you may find that if you care well for your Dieffenbachia, you don’t have to use any fertilizer. The good news is that, no matter which type you have, dieffenbachia care is the same for all! This article is a guide on growing all types of indoor Dieffenbachia plants. Looking after your ornamental plants properly will help them to thrive. But you could try putting a plastic bag over the cutting to help give it enough humidity (just never allow the bag to touch the leaves). Depending on the cultivar, the thick, large leaves are usually some mixture of green, white, and yellow. Leaves are curled with brown edges — Curled, browning leaves could be caused by excessive fertilizer application. Instead, follow these detailed tips for how to care for a dieffenbachia plant…, Two different types of dumb cane houseplants. Share your dieffenbachia care tips in the comments section below. However, if yours constantly has brown leaves, tips, or edges, then try running a humidifier nearby to see if that fixes the problem. Dieffenbachia ‘Reflector’ (left) and Dieffenbachia ‘Galaxy’ (right). And the word “dumb” is an old slang term that was used to describe someone who can’t talk (it’s mean, I know!). Grows to 22 inches tall. You can also give your plant a foliar spray using compost tea. Dumb cane (Dieffenbachia spp.) They could even be grown in your shade garden if you live in a warm climate. When it comes to watering dumb cane and leopard lily plants, it’s best to err on the side of caution. Drooping and wrinkled snake plant leaves are also symptoms of an underlying issue, often the same ones that cause curling leaves. Some plants in the Dieffenbachia species have large yellowish or creamy leaves with green margins. Diseases that affect Dieffenbachia plants are usually due to overwatering. Small white spots on dumb cane leaves could also be calcium from hard water. The most common causes of dumb cane drooping are over or under watering, exposure to hot or cold drafty air, houseplant bugs, or transplant shock. And like I said, they will get leggy much faster without adequate lighting. Too much air moisture in cooler temperatures can result in fungal diseases developing. Replant in a new container with the appropriate type of potting mix. The American Society for the Prevention of Cruelty to Animals (ASPCA) says that signs of poisoning include the following: (3). Brown Spots & Yellow Leaves on a Dumb Cane Houseplant. So, species such as Dieffenbachia ‘Snow,’ Dieffenbachia seguine, and Dieffenbachia maculata are ideal for low-light rooms and offices. The soil has gotten too dry. As with most tropical houseplants, Dieffenbachia prefers moist soil with good drainage. Study the dieffenbachia's leaves to find yellowing leaf margins. To water your dieffenbachia, give it a good soaking until the water starts to run out of the drainage holes. For example, Dieffenbachia ‘Camille’ features even yellow to cream variegation in the leaf centers, while Dieffenbachia seguine has a more splotchy leaf pattern. What to do if Dieffenbachia has small leaves. Pruning out new top growth like this will encourage your plant to grow bushier, and stay more compact. Watering plants this way tends to create a damp environment at the top of the soil and moisture can’t penetrate down to the roots. As you’ll see below, almost all problems you’ll have with growing dieffenbachia are caused by either incorrect watering (usually overwatering) or over-fertilizing. Examples of these variegated plants include Dieffenbachia maculata ‘Camille,’ Dieffenbachia ‘Tropical Marianne,’ Dieffenbachia ‘Honeydew,’ and Dieffenbachia ‘Tropic Honey.’. All kidding aside, overwatering really is the main thing you need to worry about when growing this plant. The rot smelled quite a bit like skunk. Also, a lack of bright light can affect how fast this houseplant grows. The best kind of potting mix for dumb canes is a mixture of regular potting soil and perlite. The types of pests to affect Dieffenbachia are spider mites or mealybugs. Is that ok for a dormant so called plant? Check it every few weeks by sticking your finger about 1″ into the soil. Notify me of followup comments via e-mail. So, mixing in pumice, perlite, or coarse sand will help to prevent soil moisture issues. If you can’t give them enough natural light, you could always add a grow light. The plant is near a cold draft or an air conditioning vent. The signs of mealybugs on dumb cane plants are tiny cotton-like growths on the stems and under the leaves. In this section, I’ll answer the most frequently asked questions I get about proper dieffenbachia care. Like I said, it can be grown outdoors in your shade garden, but must be protected from cold there too. Place the stems into a vase of fresh room-temperature water. Only water species of Dieffenbachia as often as the top layer of soil dries. These plants grow quickly in bright light as long as they are protected from direct sunlight. I like using compost fertilizer, which you can get in liquid form or buy compost tea bags and brew your own. Pruning helps to control how high dumb cane plants grow. The number one cause of dieffenbachia houseplant death is overwatering!! Other organic fertilizers that I like using are this houseplant fertilizer or a general purpose plant food. Simply cut them back all the way down to the main stem. Just be sure that each stem has roots before potting them up, otherwise they may not survive on their own. Leaves are curled with brown edges — Curled, browning leaves could be caused by excessive fertilizer application. Here’s a great list of some of the most common dumb cane varieties. If your dumb cane has grown tall and leggy, you can top the plant, or cut it back anywhere on the stem. Putting them next to a sunny window where they will get lots of natural light (but no direct sun) is the ideal location for them. You can easily propagate Dieffenbachia by rooting cut stems. Check the soil for moisture before watering. Mine are always tall and straggly. (1, 2), Dieffenbachia plants are also toxic to cats, dogs, and other household pets. The golden rule when watering dumb cane plants is to only water when the soil partly dries. Dumb Cane adds fun color and texture without flowers. Usually, insecticidal soap is the best way to remove these pests for good. Primarily grown for foliage, dieffenbachia rarely flowers, but when it does, the bloom looks a bit like a peace lily. Repotting puts a lot of stress on plants, and the transplant shock may end up killing weak or unhealthy plants. A lack of humidity is the most likely reason why Dieffenbachia leaves turn brown. It will show you how to keep your indoor plants alive and thriving all year long! Dieffenbachia ‘Triumph’ – creamy white leaves with green border and a pink cast at the petiole base. Look for brown, mushy roots and trim as necessary with clean, sterile equipment. Dieffenbachia Hilo - Hilo plants have large, pointed, coarse, dark green leaves that have a light green variegation and prominent white veins. I live and garden in Minneapolis, MN (zone 4b). The largest Dieffenbachia plant, the Tropical Tiki (Dieffenbachia maculata) grows to a staggering 6 feet with a width of 5 feet. Follow the directions below for fertilizing dumb cane plants. If the stem or leaves are chewed, they will cause swelling and pain in the mouth—and, therefore, temporary speechlessness. See my “Dieffenbachia Pruning Tips” above to learn how to cut back a dieffenbachia. Feed a dumb cane plant once a month with regular houseplant fertilizer to ensure fast growth. In this post, I’ll give you lots of information about the plant – including the name, different dieffenbachia types, toxicity, common problems, and FAQs. It will allow you monitor the moisture level, and help ensure you’re watering your plant at the right time. Some types of dumb cane plants grow better in low light conditions than others. A soapy water spray is also very good for controlling most types of bugs. Dumb canes can live for many years, and some varieties can grow to be several feet tall, creating a very large floor plants. Just make sure you check the soil before watering by sticking your finger about an inch into the dirt. The leaves of this plant are small, and they are creamy yellow in color with a green border. If you want to learn how to root a dieffenbachia plant, see the details in the section called “Dieffenbachia Propagation Methods”. Dieffenbachias, native from Costa Rica to Columbia, are found in many homes and offices. It’s a perennial plant and most cultivars have white speckles on the leaves, though not all cultivars have this feature. Horticultural oil works great too. This can show up as brown or black spots on leaves. Some dieffenbachia plants require low filtered light. If you live in colder climates, you can take dumb cane plants outside to grow during the summer. The most common problem with growing dumbcane dieffenbachia is too much moisture. 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