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What are the aphids that affects leylandii and makes large patches go brown? Which insecticide will deal effectively with these aphis? Many thanks, Aphids are tiny little insects that feed off the sap of trees. Leylandii is one that they are currently attacking in large numbers. Inseciticide will prevent the…
Q) I want to plant some Leylandi trees at the back of my garden to form a screen. Do their roots cause problems ie subsidence or are they quite shallow? A) Leylandii roots aren't as distructive as other types of tree, this is because they don't go very deep. They tend…