Treat the roses

Landscape (UK) - - Our Landscape -

A les­son learned last year is to spray roses in May to ame­lio­rate the im­pact of dis­eases and de­fi­cien­cies. Mag­ne­sium de­fi­ciency shows as yel­low­ing of the leaves, and is caused by a com­bi­na­tion of clay soil and dry­ness, which means that some plants can­not take up suf­fi­cient nu­tri­ents. I will spray a so­lu­tion of Ep­som salts onto the leaves. I do not like spray­ing for bugs, as birds are still feed­ing their young. Cap­sid bugs are a men­ace. Un­for­tu­nately, the dam­age they do emerges later. At the mo­ment, on the sur­face all looks rosy, but they work away in­side new shoots. The re­sult is no flower buds, and ho­ley chewed leaves to be re­vealed later on. One alien bug quite at home and very ob­vi­ous at the mo­ment is the scar­let lily bee­tle. I plunge into flower beds to squash the adults and, with gloves and news­pa­per, wipe off the fae­ces-cov­ered lar­vae cur­rently mak­ing short work of lily fo­liage.

Roses are best sprayed with Ep­som salts in May to re­duce the ef­fect of dis­ease or weak­ness.

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