rex begonias

flowergirl70ksMarch 8, 2013

Do they go dormant, and if so, how long?

Thank you for reporting this comment. Undo

They do go semi dormant - don't let them dry out completely even if they have no leaves - they still need some moisture. As long as the rhizome stays firm then it is good to go. If it gets mushy then rot has set in from too much water. If it is dry and disintegrates then it was allowed to dry out beyond its ability to withstand drought.

Full dormancy plants on the other hand need no water for weeks or months. For instance I bring caladiums indoors for winter and let them dry out completely for a few months before waking them up with some water,

Rexes should put out new leaves when conditions are right - light, warmth, water. I have 3 to 4 rexes that are just starting to put out new leaves but then I have dozens more that are quite bushy so there is no hard rules for "rex" begonias. I grow them under shoplights in winter and water 2 to 3 times a week. Your conditions may be different though.

    Bookmark   March 8, 2013 at 7:14PM
Sign Up to comment
More Discussions
Breaking dormancy
All my B. grandis tubers are showing their 'eyes' as...
Small Red Rex
I have this remnant of a plant I bought at
Blackmore & Langdon Begonia bulbs The Worst
I purchased 10 bulbs from early this spring directly...
To re-pot Rexes or not?
As you can tell from the picture, I have three Rexes...
Anyone Know Anything About 'Phoes Chloe' ?
I've had it for at least 8 years - it died back during...
© 2015 Houzz Inc. Houzz® The new way to design your home™