Growing Showy geranium in a pot

Geranium × magnificum is a low-maintenance perennial once established. Water moderately during the growing season; the plant tolerates short dry spells but performs best with consistent moisture in spring and early summer when flowering. In prolonged dry weather, water deeply once a week rather than little and often. Reduce watering after the July or August cut-back, as the fresh foliage requires less moisture. In autumn and winter, natural rainfall is usually sufficient. Feed in March or April as growth resumes. Scatter a general-purpose granular fertiliser such as blood, fish and bone or Growmore around the base at the rate recommended on the packet—typically a small handful per plant. Rake it lightly into the soil surface and water if the ground is dry. Avoid high-nitrogen feeds, which promote soft leafy growth at the expense of flowers. No further feeding is necessary during the season. This geranium is fully hardy in zones 4–8 and requires no winter protection in temperate Europe. The crown may die back partially in severe winters, but it reliably regenerates in spring. Mulch lightly in autumn with garden compost to insulate roots on exposed sites, but keep mulch away from the crown to prevent rot. Pests and diseases are rare. Occasionally, vine weevil larvae may damage roots in container-grown plants; check for notched leaf edges and treat with a biological control if needed. Powdery mildew can appear on foliage in dry summers, particularly in crowded plantings; improve air circulation and water at the base rather than overhead. Slugs may nibble young spring shoots; use organic pellets or barriers if damage is severe.