Worsleya seed

Johannes-Ulrich Urban via pbs pbs@lists.pacificbulbsociety.net
Mon, 11 Jan 2021 02:32:18 PST
´╗┐Hello Mike,

Germinating Worsleya seed is not the problem. If the seed is fresh as you state, it will germinate easily. I germinated mine with the water flotation method.
The problem came later when the germinated seed was potted. Except one they were destroyed by the larvae of sciaridae flies. When I noticed the problem it was too late. The same happened with Aloe seedlings.  There are very many different species of this fly and some seem to be more aggressive than others. I have relatively good results in treating with a solution of Bacillus thuringensis ssp. israeliensis. Must be repeated if new flies become visible. Warm and damp greenhouse condition encourage Sciaridae. For this reason I keep as many seed trays as possible outside in the garden, but even there I have noticed and treated the fly, but to a much lesser extent.

Hope that helps 

Uli 
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