Return to the Aroid Forum | Post a Follow-Up

overwintering alocasia

Posted by drtoddh 6 (My Page) on
Wed, Oct 24, 07 at 22:55

I recently bought an "upright elephant ear" at an end of the season landscape auction. I believe it is alocasia macrorhiza. I raise regular elephant ears, colocasia. I am not sure how to overwinter this alocasia. Some sources say there is a tuber to treat just like colocasia. Others say there is no tuber like that. can someone set the record straight for me. Thanks, Todd

Follow-Up Postings:

RE: overwintering alocasia

I offer this advice only with the disclaimer: your mileage may vary, because we don't have to overwinter ours here. But I have had friends tell me that this is how they do it in colder places. (These plants go dormant naturally in the winter, along with all the colocasias and xanthosomas, and re-emerge in spring here. The ground never freezes, so we get them back every Spring.)

I do grow the variegated form of Alocasia macrorhizza year round in a greenhouse. Its very large, because it never goes dormant, therefore it reproduces itself like a demon and has to be thinned every spring. I plant the thinnings outside. In my experience, macrorhizza does not form what I would call a "tuber". Its more like a "bulb".

ALocasias like Odora, Portodora, Calidora, Culculatta etc are more "tuber-forming" per-se, but to me, these are actually more "trunk forming". I have plants with trunks 2-3 ft tall.

The only ones that I think really form tubersthat kinda crawl over and under the ground are the Alocasias like Polly, loweii, sanderiana, etc and they have to get pretty large to have that.

Its really easy to overwinter macrorhizza if you take a tip from nature. Leave them outside until your nighttime temps force them into natural dormancy (the 40-50's range...maybe high 30's but not freezing). Once they go dormant, place the pot in a spot where it definitely won't freeze, and don't water it. In spring, move it back out once it warms up into the 50's and start watering it maybe once a week til the new growth starts up.

Its also possible to keep it indoors as a houseplant, if you have enough light. Just don't overwater it during the winter, and watch for pests.

RE: overwintering alocasia

I carry mine over in the greenhouse heated to 50 degrees, but I have some customers who have been growing the calidora as houseplants. Put it close to the window, don't water too much and watch for spider mites. Some of them don't even put them outdoors in the summer.

RE: overwintering alocasia

Its entirely possible to grow alocasia as long term houseplants. I have a couple that I have had in thehouse from day one, one is over 10 years old. I only put them outdoors if they get a pest infestation. I spray them with soap spray and put them out so natural predators can clean them up, then I bring them back in.

The keys to indoor success are, as sandy says, don't water too much, and give very good light. The ones I keep inside sit in front of a bank of floor to ceiling windows (24 ft across) and under 8 x 3 skylights (24 ft across). I also have palms and several other types of plants there...anthuriums, orchids, begonias...

RE: overwintering alocasia

Curious to note.

I have 3 upright EE's (Alocasia Mac) that I grew from bulbs this summer. I brought them inside when the temps started dropping and as an experiment I've placed them in 3 different spots with varying light.

The one getting the most sunlight is doing the worst. Oddly, the one getting almost no light is doing the best and growing rather quickly. The one getting medium light is doing OK too.

Same size pots. Only difference is the one in the sun gets a bit more water as the soil seems to dry more quickly than the others.

RE: overwintering alocasia

Thank you all! This was exactly what I came to this forum to find out! Great thread.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Aroid Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here