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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comOver the past few weeks I have noticed my delphinium leaves (I have 5 plants) turning brown and black, curling and falling off, as well as some of the flower buds. I have removed the dead and sick leaves and buds and flowers (which have finished for now anyway). There is new growth at the base of each plant that looks healthy. I had a good look today and found these brown larvae underneath one of the leaves (see photos). What is it? What can I do? Should I cut back each plant – how far down?
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URLs in this post:
[1] https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm: https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm
[2] https://www.gardeningknowhow.com/plant-problems/pests/pesticides: https://www.gardeningknowhow.com/plant-problems/pests/pesticides
[3] https://www.gardeningknowhow.com/ornamental/flowers/delphinium/growing-delphinium-plants.htm: https://www.gardeningknowhow.com/ornamental/flowers/delphinium/growing-delphinium-plants.htm
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1 Comment To "What Is This Larvae On My Delphinium Leaves?"
#1 Comment By BushDoctor On 07/27/2020 @ 1:48 pm
I am unable to identify that type of larva. I have never seen those, here, in my area. I would try a general purpose pesticide. Most organic methods are broad spectrum and will treat a large number of insect pests.
Here are some articles that will help:
https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm [1]
https://www.gardeningknowhow.com/plant-problems/pests/pesticides [2]
https://www.gardeningknowhow.com/ornamental/flowers/delphinium/growing-delphinium-plants.htm [3]