Thompson & Morgan Kew Flower Eryngium Leavenworth II - 25 Seeds

Eryngium leavenworthii, commonly known as Sea Holly or ‘Purple Pineapple’, is a captivating annual...

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This guide is for gardeners looking to add unique color and texture to their gardens with Thompson & Morgan's Eryngium leavenworthii, also known as Sea Holly. The key benefit is its striking metallic violet appearance and attraction to pollinators, enhancing both the visual appeal and ecological value of your garden. A key consideration is that, as a hardy annual, it requires yearly sowing to maintain its presence.

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Model Part NumberKC9709
BrandThompson & Morgan

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FAQs

How much sun does Eryngium leavenworthii need?

It requires full sun for optimal color and flowering.

What kind of soil is best?

It prefers well-drained soil.

How often should I water it?

Keep well-watered until established, then it becomes drought-tolerant.

Can I use it as a cut flower?

Yes, its spiky bracts are great for fresh or dried floral arrangements.

Is it suitable for beginner gardeners?

Yes, it is easy to grow from seed.

What attracts bees and butterflies?

The plant is highly attractive to bees and butterflies.

Troubleshooting

Poor germination.

Ensure proper soil temperature (18-21°C or 65-70°F) and adequate moisture during germination. Consider starting seeds indoors for better control.

Plant not flowering.

Ensure the plant receives full sun. Check the soil for drainage and amend if necessary.

Pros and Cons

Pros

  • Adds a unique visual element with its metallic violet color and spiky bracts.
  • Supports local ecosystems by attracting bees and butterflies.
  • Versatile plant suitable for various garden styles and uses.
  • Easy to grow from seed, making it accessible to gardeners of all experience levels.

Cons

  • Requires full sun for optimal color and flowering.
  • Being an annual, it requires re-sowing each year.
  • May require consistent watering until established.

Setup, Compatibility & Care

  1. Light: Full sun is essential for the best color and flowering.
  2. Temperature: Germinate seeds at 18–21°C (65–70°F).
  3. Watering: Keep well-watered until established; drought-tolerant once mature.
  4. Feeding: Use a general-purpose feed once plants are established.
  5. Soil: Prefers freely draining soil.

Compatibility: This plant is compatible with a variety of other plants commonly found in Mediterranean gardens. Consider companion planting with herbs such as lavender and rosemary for a cohesive aesthetic and to further attract pollinators.