Rita's Garden Path

Spurge (Euphorbia 'Imprkalip' KALIPSO)

Euphorbia 'Imprkalip' KALIPSO Spurge is a compact, low-maintenance perennial offering yellow spring blooms in dry, sunny spots.

Spurge (Euphorbia 'Imprkalip' KALIPSO)

Complete Plant Information

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Hardiness Zones
USDA 4 - 8
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Plant Type
Herbaceous perennial
🌳
Plant Family
Euphorbiaceae
☀️
Sun Exposure
Full sun to part shade
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Water Needs
Dry to medium
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Maintenance
Low
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Height
0.5' - 1' (15cm - 30cm)
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Spread
1' - 1.5' (30cm - 46cm)
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Bloom Time
April to May
🎨
Flower Color
Yellow
Flower Qualities
Showy
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Tolerances
Rabbit, Deer, Drought, Air Pollution

Overview

Euphorbia ‘Imprkalip’ KALIPSO is a highly desirable herbaceous perennial valued for its tidy, compact habit and vibrant spring color. This variety of Spurge typically forms a neat, rounded mound of moss green foliage, rarely exceeding one foot in height, making it excellent for defined plantings. Its primary aesthetic contribution comes from the unique, petal-like pale yellow bracts that appear above the leaves on red stems from April through May.

This tough perennial thrives in challenging, well-drained conditions, offering gardeners a low-maintenance solution for sunny borders and rock gardens. Euphorbia ‘Imprkalip’ KALIPSO exhibits excellent tolerance to drought and is unwelcome by common garden pests like deer and rabbits. Its compact nature distinguishes it from larger, more sprawling euphorbia relatives.

Gardeners seeking structure and early color will appreciate the dependable performance of this cultivar. Ensure sharp drainage is provided, as wet winter soils are detrimental to the health of this robust, yet particular, Spurge variety.

Fast Facts

  • Plant Family: Euphorbiaceae
  • Plant Type: Herbaceous perennial
  • Hardiness Zones: USDA Zones 4-8
  • Size at Maturity:
    • Height: 0.5-1 ft
    • Spread: 1-1.5 ft
  • Bloom Time: April to May
  • Bloom Description: Yellow
  • Sun Exposure: Full sun to part shade
  • Water Needs: Dry to medium
  • Maintenance Level: Low

How to Grow

The key to successfully growing Euphorbia ‘Imprkalip’ KALIPSO is ensuring exceptional soil drainage. Plant this Spurge in spring or fall in full sun, though afternoon shade is appreciated in the hottest summer climates. While it tolerates poor, rocky-sandy soils, the soil must never remain soggy, especially during winter months where wet conditions can prove fatal.

Maintenance is generally minimal once established. Water sparingly, allowing the soil to dry out between irrigations, as established plants tolerate drought well. Fertilizing is usually unnecessary, as euphorbias prefer lean conditions. If planting in Zone 5, choose a protected site, as this variety is not reliably hardy there without buffering from winter wetness or severe cold.

Take care when pruning or handling this plant; always wear gloves. The attractive shape of Euphorbia ‘Imprkalip’ KALIPSO can be lost if sited in too much shade, causing the clump to open up. Minimal pruning is usually required, generally just cleaning up old stems in early spring before new growth emerges.

Landscape Uses

Euphorbia ‘Imprkalip’ KALIPSO is ideally suited for small-scale architectural plantings where its compact, mounding habit can be best appreciated. It functions perfectly as an edging plant along pathways or nestled into the front of perennial borders where its emerging green foliage and yellow blooms can anchor the design. Due to its manageable size, this Spurge is also an excellent choice for containers, providing year-round structure alongside seasonal annuals.

In rock gardens, the dwarf nature and drought tolerance of Euphorbia ‘Imprkalip’ KALIPSO truly shine, complementing coarse textures like ornamental grasses or creeping thyme. Pair it with late-blooming companions such as Nepeta or Salvia, which will emerge later in the season after the Spurge’s flush of yellow color has finished, ensuring continuous visual interest throughout the summer landscape.

Standout Features

Flower Qualities

  • Showy

Noteworthy Characteristics

The genus Euphorbia encompasses about 2,000 species globally, ranging from annuals to trees, but KALIPSO is a bushy, compact herbaceous perennial cultivar that mounds to about 8-12 inches tall. Its “flowers” consist of yellow, petal-like bracts displayed on reddish stems in early spring, contrasting sharply with its bright green foliage. Note that all plant parts exude a white milky sap when broken, which can irritate the skin, necessitating careful handling of this patented variety, Euphorbia ‘Imprkalip’ KALIPSO.

Tolerances

  • Rabbit
  • Deer
  • Drought
  • Air Pollution

Potential Problems

Euphorbia ‘Imprkalip’ KALIPSO exhibits low susceptibility to serious insect or disease issues, making it a reliable addition to the garden. The primary concern involves contact with the plant’s milky sap, which is toxic and can cause skin irritation or rashes; always use gloves when working near this Spurge. Deer readily avoid this plant due to the toxicity of the euphorbia sap. The most significant cultural risk involves improper soil conditions, specifically heavy, poorly draining soils which lead to root rot, especially in winter.

Frequently Asked Questions

What hardiness zones is Spurge suitable for?

Euphorbia ‘Imprkalip’ KALIPSO is reliably hardy in USDA Zones 4 through 8, though gardeners in Zone 5 should ensure protected siting.

How large does Euphorbia ‘Imprkalip’ KALIPSO grow?

This compact variety typically reaches a height between 0.5 and 1 foot tall with a spread of 1 to 1.5 feet wide, maintaining a rounded mound shape.

What sun exposure does Spurge need?

This Spurge performs best with full sun exposure, although it will tolerate light afternoon shade, especially in hotter regions.

When does Euphorbia ‘Imprkalip’ KALIPSO bloom?

This cultivar blooms reliably in the spring, typically from April to May, showcasing bright yellow flower-like bracts above the foliage.

Conclusion

The Euphorbia ‘Imprkalip’ KALIPSO offers exceptional value through its compact form, low maintenance needs, and early spring color display, successfully providing structure in sunny, dry garden spots. As a tough, pest-resistant Spurge, it is a superior choice for foreground planting or rock gardens. Before planting, verify your region falls within USDA Zones 4-8 and ensure sharp drainage to guarantee many years of handsome performance from this unique euphorbia.

Companion Planting

Selecting companions for Euphorbia ‘Imprkalip’ KALIPSO should focus on plants that share its preference for dry to medium soil and full sun, while offering contrasting foliage texture or later bloom times. Consider pairing it with plants that bloom in mid-to-late summer, as the bright yellow of the Spurge fades by late spring. Good choices include herbs like Lavender (Lavandula) or sturdy ornamental grasses that thrive in lean conditions. Avoid planting near moisture-loving perennials, as the differing water requirements will create cultural conflicts for the Euphorbia.

Design Ideas for Low Water Gardens

This low-growing Spurge integrates seamlessly into Xeriscape designs where water conservation is a priority. Use Euphorbia ‘Imprkalip’ KALIPSO masses to create bright, low-growing structural islands punctuated by taller, drought-tolerant shrubs like Russian Sage or upright Sedum varieties. Because the foliage of KALIPSO remains attractive even when not in bloom, it works well to provide year-round definition in a mixed border. Its bright chartreuse-yellow effect in spring acts as an excellent transitional color between early bulbs and the deeper greens of summer perennials.

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