North America Non-native Plant

Equisetum ×dycei

Botanical name: Equisetum ×dycei

USDA symbol: EQDY2

Native status: Not native but doesn't reproduce and persist in the wild

Equisetum ×dycei: The Mysterious Horsetail Hybrid If you’ve stumbled across the name Equisetum ×dycei in your plant research, you’ve encountered one of botany’s more elusive characters. This horsetail hybrid – indicated by that telltale × symbol in its scientific name – represents a cross between two Equisetum species, but don’t ...

Equisetum ×dycei: The Mysterious Horsetail Hybrid

If you’ve stumbled across the name Equisetum ×dycei in your plant research, you’ve encountered one of botany’s more elusive characters. This horsetail hybrid – indicated by that telltale × symbol in its scientific name – represents a cross between two Equisetum species, but don’t expect to find it at your local garden center anytime soon.

What Exactly Is Equisetum ×dycei?

Equisetum ×dycei belongs to the fascinating world of horsetails, those prehistoric plants that have been around since the dinosaurs roamed the Earth. These aren’t your typical garden plants – they’re living fossils that reproduce through spores rather than seeds and have hollow, jointed stems that give them their distinctive appearance.

As a hybrid, Equisetum ×dycei would theoretically combine characteristics from its parent species, but specific information about this particular cross is remarkably scarce in botanical literature. This suggests it’s either an extremely rare natural occurrence or a hybrid that hasn’t been extensively studied or documented.

The Challenge of the Unknown

Here’s where things get interesting (and a bit frustrating for curious gardeners): detailed information about Equisetum ×dycei’s specific characteristics, native range, and growing requirements simply isn’t readily available. This lack of documentation makes it nearly impossible to provide concrete advice about cultivation, appearance, or ecological role.

Should You Try to Grow It?

Given the mystery surrounding this particular hybrid, here’s the practical reality:

  • You’re unlikely to find Equisetum ×dycei available for purchase
  • Without clear identification guides, you wouldn’t know if you encountered it in the wild
  • Growing requirements would be purely speculative
  • Its garden value remains unknown

Better Horsetail Alternatives

If you’re drawn to the unique appeal of horsetails for your garden, consider these better-documented options:

  • Field Horsetail (Equisetum arvense) – More widely available and understood
  • Giant Horsetail (Equisetum telmateia) – Impressive size for dramatic garden statements
  • Scouring Rush (Equisetum hyemale) – Architectural form perfect for modern landscapes

The Botanical Detective Work

If you suspect you’ve encountered Equisetum ×dycei in nature, proper identification would require expert botanical knowledge and potentially genetic analysis. Horsetail identification can be tricky even for well-known species, and hybrid identification adds another layer of complexity.

The Bottom Line

Equisetum ×dycei remains one of botany’s puzzles – a named hybrid with little available information about its characteristics, distribution, or cultivation. While this makes it unsuitable for most gardening purposes, it serves as a reminder that the plant world still holds mysteries waiting to be fully explored and documented.

For now, if you’re interested in adding the ancient charm of horsetails to your landscape, stick with the well-documented species that you can actually find, grow, and enjoy with confidence.

Equisetum ×dycei

Classification

Group

Horsetail

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Equisetophyta - Horsetails

Subdivision
Class

Equisetopsida

Subclass
Order

Equisetales

Family

Equisetaceae Michx. ex DC. - Horsetail family

Genus

Equisetum L. - horsetail

Species

Equisetum ×dycei C.N. Page [excluded]

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA