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Home Page » Home & Garden » Gardening » Autumn crocus: Colchicum autumnale Pleniflorum

Autumn crocus: Colchicum autumnale Pleniflorum

Other common names: meadow saffron

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Autumn crocus: Colchicum autumnale Pleniflorum

An excellent plant to naturalize in rock gardens or lawns, this fall-blooming cormous perennial produces shiny, straplike leaves in winter or early spring; after a summer rest, a cluster of soft purple-pink, waterlily-like blooms appears. Cultivars are available with single or double flowers in shades of white, lavender, and pink.

Profile

Plant typeperennial,bulb
Hardiness zones4 to 9
Lightfull-sun-to-part-shade
Height up to 6 in.
Spread up to 1 ft.2 in.
Habitclump-forming
Soil pHslightly-acidic-to-neutral-pH6.5-7
Soil moistureaverage
Bloom timefall
Flower colorpink
Bloom size3 in. to 3 in.
Foliage colormedium-green
Foliage size1 ft.2 in. to 1 ft.2 in.

did you know?

Although autumn crocus and the true, spring blooming crocus are both bulbs?or more precisely, cormous perennials?the plants are not related. Autumn crocus reverses the crocus's schedule, producing its leaves first (in the late winter or early spring) and then flowering in fall.

general maintenance:

Remove foliage after dieback to promote a tidy appearance.

pests/diseases:

Slugs and snails may damage shoots. Gray mold may occur.

controls:

Handpick slugs and snails, or spread diatomaceous earth around plants. To control gray mold, remove and destroy infected corms. Increase spacing between plants to improve air circulation, and reduce watering.

how to sow/plant:

In summer or early fall, choose a sunny to partly sunny site with well-drained soil and amend with compost or well-rotted manure. Set corms 4 inches deep, 6?9 inches apart. Water after planting.

water and fertilize:

Maintain soil moisture while in growth, but withhold water after leaves die back, keeping corms as dry as possible until flowers emerge. Fertilization is not required.

garden hint:

Although the stature of the autumn crocus flower is small, the long foliage will fall over other tiny or tender plants, so plan accordingly.

features:

  • Attractive Flowers
  • Attractive Foliage
  • Shade Tolerant

garden uses:

  • Flowerbed borders
  • Naturalizing
  • Rock Garden

other uses:

    combine with:

    other bulbs in the rock garden like species tulips, snowdrop Cape tulip and crocus for blooms throughout the season.

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