A 1.8-metre plant can take up less ground space than a 30-centimetre mound. That simple fact explains why height is often safer than adding more plants when a May border feels flat. The controlling issue is not how many flowers you can fit into the bed. It is how clearly the eye can read the …
Which perennials should you divide in April? Choose plants with cool-season root activity April division succeeds because many perennials are growing roots before they face intense leaf growth and summer heat. Daylilies, hostas, Siberian iris, Shasta daisies, yarrow, rudbeckia, catmint, hardy geraniums, and ornamental grasses usually recover well when divided early. These plants can replace …