Tuberous Begonias - Knowledgebase Question

Warsaw, MO
Question by doublel
June 27, 2000
I have planted tuberous begonias for centerpieces for my daughter's wedding. The leaves are looking great and buds are forming. In order to keep them blooming should I deadhead the blossoms after they have faded and should the foliage be cut back in any way. The wedding is Aug. 26th and I would like for them to be as much in bloom as possible. I am fertilizing them weekly with a liquid fertilizer and have not been misting them. Should I do this?
They are in a protected area. Thank you for your information.

Answer from NGA
June 27, 2000


In general, tuberous begonias blossom all summer long as long as they receive the light shade and regular watering that helps them thrive. It isn't necessary to deadhead begonias; the petals fall off, all on their own. You can feed weekly with a quarter strength dilution of liquid fertilizer. Don't mist the leaves - you might be encouraging fungal diseases. Make sure the pots drain freely and are large enough for the tubers to grow over the season. Also, make sure that a full-grown plant won't topple the pot (according to Burpee's catalog, their habit is to spread, and the mound can reach 12" in height). They'll make beautiful centerpeices, I'm sure. Plant a few extra pots as insurance against loss, and if hail or other "heavy weather" threatens while they're growing outside this summer, make provisions to move them to a sheltered place. Growing them on a wheeled platform may be a good idea, so that you can easily move them into a garage or outbuilding. Finally, since nothing is completely predictable, have a florist ready to serve as your back up just in case. Best wishes!

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