An overview of the problems, pest and diseases affect Asparagus Plants
Asparagus beetles are bright red, dark blue and cream coloured beetles about 1 centimeter long
Asparagus beetles and their grubs can completely destroy the foliage of an asparagus plant.
If this happens to your asparagus crop leave three stems of asparagus at the end of the rows, cut back the foliage and the beetles that fall to the ground will then climb back up the remaining stems where they can be exterminated. is or malathion especially when you see the grey grubs.
Chocolate spot is a disease that causes brown streaks and blotches on the leaves and stems of asparagus.
This indicates a shortage of potash or phosphate in the soil - you should correct this deficiency.
With a severe attack spray with colloidal copper at the end of April.
Asparagus root tips are attacked by a fungus web of a violet or purple colour that cause the plants to turn yellow and die.
Remove and burn these plants.
You will also have to isolate the infected area with corrugated iron or polythene for the rest of the life of the bed.
Late frosts can cause shrinking of the asparagus stems at ground level causing them to go black.
If you ridge the soil so that only the tips are showing you should be ok, but for extra protection from severe frosts cover with paper, sacking or straw.
Slugs and cutworms may attack and eat the young asparagus plants
IMPORTANT: Note - Before applying any chemical treatments in your garden it is important to read the manufacturer's instructions for proper use and safety information.
Always checks for the latest laws and regulations regarding use of chemicals in your country
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How to deal with Pests, diseases affcting Asparagus - beetles, Chocolate spot, frost, slugs, cutworm, violet root rot, fungus - applying chemical treatments in your garden to treat these asparagusproblems