Plant Encyclopedia

Pumpkin Hypericum

Hypericum inodorum 'Kolmapuki'

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Pumpkin Hypericum with orange flowers

Discover More Information On Pumpkin Hypericum

Pumpkin Hypercium is easy to grow and covered with yellow flowers in spring, followed by clusters of glowing orange berries each fall. Plant in mixed containers along with fall mums or flowering kale to highlight its outstanding fall berry display, or in the garden in drifts where it can truly show off its multi-season appeal. Pumpkin also makes the perfect addition to cut autumn floral arrangements. intoduced by Plants Nouveau.

Plant Attributes

The Pumpkin Hypericum is a unique hybrid plant that combines the striking features of the pumpkin and the hypericum. This remarkable specimen boasts a blend of both ornamental and medicinal properties, making it a valuable addition to any garden or landscape.

Visually, the Pumpkin Hypericum displays a lush, bushy growth habit, similar to that of the traditional hypericum. The plant reaches a mature height of approximately 3-4 feet, and its branches are covered in dense, dark green foliage. The leaves are elliptical in shape, with tiny, transparent dots that are characteristic of the hypericum species. These dots are actually tiny oil glands, which release a delightful, aromatic fragrance when crushed.

The most striking feature of the Pumpkin Hypericum is its flowers, which closely resemble miniature pumpkins. These vibrant, orange-yellow blooms emerge in late summer and last well into autumn, providing a pop of color that contrasts beautifully with the plant's dark foliage. Each bloom measures about 1-2 inches in diameter and is composed of numerous petals that surround a central disk of tiny, seed-like structures. As the flowers mature, they develop a slightly ribbed texture, reminiscent of a pumpkin's skin.

Aside from its ornamental appeal, the Pumpkin Hypericum also possesses a range of medicinal properties. Like its hypericum parent, the plant is rich in hypericin and other bioactive compounds, which have been traditionally used to treat mild to moderate depression, anxiety, and inflammation. However, due to the hybrid nature of the plant, it is important to consult a healthcare professional before using it for medicinal purposes.

In terms of cultivation, the Pumpkin Hypericum is a relatively low-maintenance plant. It thrives in well-drained soil and prefers full sun to partial shade. The plant is also relatively drought-tolerant and can withstand short periods of dry conditions. To encourage healthy growth and an abundance of blooms, it is recommended to prune the plant annually, removing any dead or damaged branches.

Landscape Use

The Pumpkin Hypericum's unique appearance and low-maintenance nature make it an excellent choice for various landscaping applications. Its vibrant flowers, fragrant foliage, and adaptable growth requirements allow it to thrive in different settings, from residential gardens to public parks and commercial landscapes. Here are some popular landscaping uses for the Pumpkin Hypericum:

  1. Border Planting: The Pumpkin Hypericum's dense growth habit and medium height make it an ideal choice for border plantings, providing a colorful and fragrant boundary to garden beds, walkways, or property lines.
  2. Mixed Perennial Gardens: The Pumpkin Hypericum can be combined with other perennials, such as coneflowers, salvias, and ornamental grasses, to create a visually striking and diverse garden display. Its late summer and autumn blooms provide a continuous source of color when other plants may be past their peak.
  3. Container Planting: Due to its moderate size, the Pumpkin Hypericum is suitable for planting in large containers, which can then be arranged on patios, balconies, or around outdoor seating areas. This allows for the enjoyment of its vibrant blooms and fragrant foliage up close.
  4. Wildlife Gardens: The Pumpkin Hypericum's bright flowers attract pollinators like bees and butterflies, making it an excellent addition to wildlife gardens. Moreover, its dense growth habit provides shelter for small birds and other beneficial insects.
  5. Mass Planting: Planting Pumpkin Hypericum in large groups can create an impressive display of color and texture, particularly when used in larger landscape designs or public parks. The plant's drought-tolerance and easy-care nature make it well-suited for large-scale applications where maintenance may be limited.
  6. Medicinal or Herb Gardens: Given its traditional medicinal uses, the Pumpkin Hypericum can be incorporated into a medicinal or herb garden alongside other therapeutic plants like lavender, chamomile, and echinacea.
  7. Erosion Control: The Pumpkin Hypericum's robust root system can help stabilize soil in sloped areas or along banks, providing erosion control while also adding color and visual interest.

Planting & Care

Planting and caring for the Pumpkin Hypericum is relatively straightforward, as it is a low-maintenance plant that can adapt to various conditions. By following some basic guidelines, you can ensure the successful establishment and growth of this unique plant in your landscape:

  1. Site selection: Choose a location with well-drained soil and exposure to full sun or partial shade. The Pumpkin Hypericum prefers at least 6 hours of sunlight per day for optimal growth and flower production. However, it can tolerate some shade, particularly in hotter climates.
  2. Soil preparation: Amend the planting site with organic matter, such as compost or well-rotted manure, to improve soil fertility and drainage. The Pumpkin Hypericum is not overly fussy about soil type but will perform best in moderately fertile, well-drained soil with a pH range of 6.0 to 7.0.
  3. Planting: Dig a hole twice the width and the same depth as the root ball of the plant. Gently remove the plant from its container, taking care not to damage the roots. Place the plant in the hole, ensuring the top of the root ball is level with the surrounding soil surface. Fill in the hole with soil, and press down firmly to eliminate air pockets. Water thoroughly to help settle the soil around the roots.
  4. Mulching: Apply a 2-3 inch layer of organic mulch, such as bark chips, straw, or compost, around the base of the plant. This will help conserve moisture, suppress weeds, and regulate soil temperature. Be sure to leave a small gap between the mulch and the stem to prevent rot and pests.
  5. Watering: The Pumpkin Hypericum is moderately drought-tolerant but will require regular watering during the first year of establishment to promote healthy root development. Water the plant deeply, allowing the soil to dry slightly between waterings. Once established, reduce the frequency of watering, providing supplemental water during extended dry periods or when the plant shows signs of stress.
  6. Fertilizing: Apply a balanced, slow-release fertilizer in early spring to promote healthy growth and abundant flowering. Follow the manufacturer's instructions for application rates and timing. Alternatively, you can apply a layer of compost or well-rotted manure around the base of the plant each spring to provide nutrients.
  7. Pruning: Prune the Pumpkin Hypericum in late winter or early spring, before new growth begins. Remove any dead, damaged, or crossing branches, and trim back approximately one-third of the previous year's growth to encourage bushier growth and more blooms. Regularly deadhead spent flowers to promote continuous blooming throughout the season.
  8. Pest and Disease Control: The Pumpkin Hypericum is generally resistant to pests and diseases. However, monitor the plant for signs of common issues, such as aphids or fungal diseases, and treat promptly with appropriate remedies if needed. Maintaining proper watering, pruning, and sanitation practices will help minimize the risk of pests and diseases.

Additional Information

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Pumpkin Hypericum


Plant Features

  • Height: 2.5-3'
  • Width: 2-2.5
  • Hardiness Zone: 6-9
  • Heat Zone: 9
  • Exposure: Full Sun
  • Habit: Upright, Rounded
  • Flower Color: Yellow
  • Foliage: Dark Green

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