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Summer Bulbs That Return Year After Year: Calla, Dahlia, Gladiolus, Lily

Some garden flowers are like old friends—disappearing in winter, returning exuberant in late spring. Easygoing summer bulbs: callas, dahlias, gladiolus, Asiatic and Oriental lilies—reliable in beds or containers.

Bloom Sequence

  • Dahlias: late April/May – spring-green foliage, jewel blooms
  • Gladiolus: June – cheerful spears
  • Asiatic lilies: star-shaped flowers
  • Calla hybrids: fluted cup blooms
  • Oriental hybrids: August – large, fragrant, perfume the garden

Pot a few for patio display or plant where visible from indoors. Enjoy vivid colors and obliging nature.

Planting Guide

Rich, fast-draining soil (3 in. compost amendment). Depth rule: 3× bulb diameter. Some need deeper. Stake tall dahlias/lilies at planting.

BulbSpacingDepth
Calla (hybrids)8–12 in.3–4 in.
Dahlia (small)1–2 ft.3–4 in.
Dahlia (large)3–5 ft.6 in.
Gladiolus (small)4 in.2–3 in.
Gladiolus (large)3–5 ft.4 in.
Lily (small)6 in.4–5 in.
Lily (large)1 ft.6 in.

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