Helping You Become a More Successful Gardener
Gardening Guides


Be Smart When Growing Dumbcanes

Email Email Page Print Print Page
Dr. Gerald Klingaman Add to Journal

Extras

Add Photo to Journal Add Photo to Journal
Dieffenbachia Sequine Amoena
Photo Credit: Gerald Klingaman
This ‘Amoena’ dumbcane has been cut back to its main trunk several times over the years, and each time it’s come back fuller and more beautiful.
You see them everywhere in American homes and offices – the lovely, lush Dieffenbachia. And with good reason: They work well inside, don’t have many pest problems, and they don’t need much light. In fact, they’ve been around since 1759 – so I’d say this is one plant with good staying power!

Also known as dumbcanes, these indoor beauties are easy to grow: They just need a bit of light and some regular care. This includes keeping it out of direct sun (or the leaves will sunburn) and letting the soil dry out a bit between waterings (but don’t let it become bone-dry).

There are some great dumbcane selections to choose from. Try an old favorite like Dieffenbachia seguine ‘Amoena’. This cultivar makes quite a statement, reaching 6-8 feet tall! Its 18-inch-long leaves cluster at the ends of stout, segmented trunks that often grow 2 or more inches in diameter. The plant has cream-colored, finger-shaped blotches equally spaced down the length of the leaves and is representative of the older dumbcanes. Newer types like ‘Triumph’, ‘Tropic Star’ and ‘Honey Dew’ have creamy-white or yellow variegation patterns over much of the leaf, as well as more compact, free-branching growth habits.

Warnings
  • While attractive and easy-to-grow, Dieffenbachia is poisonous! Keep it (as well as all houseplants) away from children and pets. If the plant is ingested or someone is experiencing a severe toxic reaction, call 9-1-1 or your Poison Control center.
Tips
  • After several years, your Dieffenbachia will probably start to resemble a palm tree (tall and spindly, with all the leaves at the top). When this happens, you can air layer (re-root) the top and start a new plant. Old plants can be cut back to a 6-inch stub and allowed to regrow from the base. (Remember: Always wear gloves when cutting dumbcanes!)
Facts
  • The tropical Dieffenbachia was a favorite parlor plant of Victorian housewives.
Definitions
  • Air layering: Wounding a plant’s stem and wrapping it in a consistently moist medium to encourage it to grow new roots in that area to support the plant.
 
Page 1 of 2

Next Steps


Articles
  • Indoor Exotic Plants
    Boring leafy houseplants got you down? Mix it up with exotics! Here’s a look at some fun indoor plants for you to try.
  • How to Properly Water Houseplants: Tools of the Trade
    Properly watering houseplants is a challenge to many, but it’s critical to successful plant growth. Here are some tips for overcoming this watering challenge.
  • Treat Your Houseplants to a Summer Vacation
    Everyone enjoys a summer vacation – so do your houseplants. Follow these simple steps to help your indoor plants get the most out of the great outdoors. (They may not send you a postcard, but they’ll bring you back a great souvenir – lush growth!)
RATE THIS PAGE
On average this item has been rated a 5 out of 5.