Over Phospated Wisteria - Cut Back? - Knowledgebase Question

Brooklyn, NY
Question by slbowen
July 18, 2000
Upon doing research on trying to get a wisteria to bloom (add triple super phosphate), I clearly added too much to my wiskey-barrel grown terrace garden wisteria... The leaves all fell off and I was sure I killed it.

Well, it is still alive but very much struggling. Because it is so late in the season (I'm in Brooklyn NY) the new leaves keep getting fried by the sun. I'm watering it twice a day. I've also given it some plant food.

My question is mostly this: is it a good idea to trim back the branches? I'm afraid of putting it through any more shock, but it seems that having less area to try to populate with leaves might be a good idea.

T


Image
Answer from NGA
July 18, 2000

0

a reaction to an insect spray.

At this point, I would suggest sheltering it from wind, provide light shade or morning sun only, repotting into a good quality soilless mix and watering only enough to keep the soil evenly moist. Trim the plant back by about half to minimize the demands on the apparently damaged root system and use a compost tea and/or seaweed based water soluble fertilizer according to the label instructions to try to give the plant a gentle boost.

Good luck.
a reaction to an insect spray.

At this point, I would suggest sheltering it from wind, provide light shade or morning sun only, repotting into a good quality soilless mix and watering only enough to keep the soil evenly moist. Trim the plant back by about half to minimize the demands on the apparently damaged root system and use a compost tea and/or seaweed based water soluble fertilizer according to the label instructions to try to give the plant a gentle boost.

Good luck.

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