Plants

Lady's-slipper orchids

Cypripedium hybrids

Susann Hayn Susann Hayn

Cold-hardy Lady's-slipper orchids bring exotic flair in the shaded garden. When the elegant beauties open their flowers in May they can be sure of our attention. Things that matter in planting and care.

Growth type
  • Perennial plant
Growth characteristics
  • horst-forming
Flower color
  • green
  • yellow
  • red
  • white
  • brown
  • multicolored
Flowering time (month)
  • June to August
Flower shape
  • individually
  • Cluster
Leaf color
  • green
page format
  • ovate
  • fan-shaped
Sheet properties
  • Rosette
Light
  • semi-shade to shady
Soil type
  • stony to sandy
Soil Moisture
  • fresh to humid
Nutrient requirements
  • moderately nutritious
Decorative or utility value
  • Flower Decoration
  • picturesque growth
Winter Hardness
  • hardy
Use
  • Flowerbeds
  • Underplanting
  • Rebates
Garden style
  • Flower garden
  • Stone Garden

Origin

The genus of Lady's-slipper orchid belongs to the orchid family (Orchidaceae) and comprises about 35 terrestrial orchid species (). They grow primarily in the temperate areas of the northern hemisphere as well as in South Asia and Mexico. The majority of the species are endangered due to illegal trafficking or destruction of the natural habitat.

Growth

Lady's-slipper orchids are perennial and herbaceous plants that grow terrestrially. This means that, unlike most other, Orchids they grow on the ground and are therefore not epiphytes (epiphytes). Each rosette of leaves in the Lady's-slipper orchid produces only one flowering shoot. Then new rosettes then form on the leaf axils, which bloom the following year.

Foliage

The egg-shaped and fan-shaped green leaves of the Lady's-slipper orchids are arranged spirally or in opposite directions.

Flowers

The flowers appear individually in summer or in clusters, which are composed of up to twelve flowers. The individual flower consists of four spreading sepals (tepals) and a slipper-shaped lip. Depending on the type and variety, they appear in white, yellow, green, brown or in different shades of red, often they are also streaked, spotted or striped.

Lady's-slipper orchid Cypripedium

The winter-hardy Lady's-slipper orchid is an eye-catcher and even gives a touch of the exotic to shaded locations

Location

Since Lady's-slipper orchids are forest plants, they prefer cool, shady conditions and also thrive on the north side of the house. The location must not be too dry.

Soil

Ideal is a loose not too dry soil in which no waterlogging occurs. Heavy and clayey soils can be loosened using broken expanded clay (for example Hydroponics from specialist shops), sand or pumice gravel.

Planting

Fall is the best time to plant them in the garden, when the Lady's-slipper orchids are in the dormancy phase. Dig a ten centimeter deep hole and spread out flat the roots of the Lady's-slipper orchid. The bud from which the new shoots grow next year should be planted with only a 0.8 inches high soil covering. Fill the soil loosely and - most importantly - do not press it in. In the end, water the newly planted Lady's-slipper orchid. Once firmly rooted, it grows up to be a stately plant in a few years. As long as they are horticultural crosses (hybrids) and not wild species, you will enjoy these exclusive shade perennials even without special knowledge

Care

In fall you can let the fallen leaves remain where they are. Do not place Lady's-slipper orchids too close to large trees, as the competition for the nutrients in the root area is too great. The Lady's-slipper orchids are fertilized in spring with normal mineral or garden fertilizer. Frost-hardy plants do not need winter protection. They need to be watered regularly in the hot summer months. Waterlogging should be avoided at all costs.

Dividing

To propagate Lady's-slipper orchids, you can carefully divide and replant the perennials in spring. When replanting, don’t forget to take a bit of the old soil around the root ball and mix it with the new soil. It has essential symbiotic fungi that the plants need to thrive.

Where to plant

Lady's-slipper orchids are suitable for shaded stone gardens, peat beds or wooded gardens. A word of caution: Trees or large shrubs with an aggressive root system are not good neighbors. Compatible plants are Witch hazel (Hamamelis), Buttercup Winterhazel (Corylopsis), low ferns and shrubs like Caucasus forget-me-nots (Brunnera) and small-sized hostas (Hosta).

Varieties

Specialist plant nurseries offer Lady's-slipper hybrids with different flower colors from their own breeding. This ensures that the strictly protected Lady's-slipper orchids are not illegally removed from the natural habitat.

A couple of recommended varieties are “Ventricosum Pastel” (left) and “Ventricosum” (right)

“Ventricosum” is a hybrid with ivory colored blossoms. It will form larger clumps within a few years. The Lady's-slipper orchid ‘Ventricosum’ is eye-catching because of its broad leaves and strong stems.

The winter-hardy varieties are ‘Gisela’ (left) and ‘Hank Small’ (right)

The multi-branched Lady's-slipper hybrid “Gisela” is particularly frost-hardy and robust and grows to a height of 11.81 to 17.71 inches. Elf flowers, Hostas or Ferns have similar location requirements and are beautiful next to their large purple-pink flowers. The variety 'Hank Small' forms dainty flowers, which resemble the native wild form in their play of colours.

Propagation

Lady's-slipper orchids are propagated by dividing the root ball (see “dividing" on top).

Diseases and Pests

A big problem with Lady's-slipper orchids are - as with many other perennials – slugs. Therefore, you should protect the sprouting plants in good time from damage in the spring, for example by spreading slug pellet.

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