Field horsetail
Equisetum arvense · Equisetaceae
The gardener's calendar
Ideal time to plant field horsetail: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- Spring (spores)
- Adult size
- 20 to 60 cm tall
- Growth
- Fast, invasive
- Hardiness
- Very hardy (-20°C)
- Origin
- Temperate Eurasia
- Soil type
- Moist, clayey or silty
- Exposure
- Part shade to full sun
Care
Watering
Horsetail thrives in constantly moist soils and tolerates even marshy areas. Regular watering is beneficial during the spring growing period. Aim for soil that never dries out completely, except in winter when moisture can decrease slightly.
Exposure
Place your horsetail in part shade to full sun depending on your climate. It tolerates full exposure well but prefers some shade in very hot regions. What matters most is keeping the soil moist, regardless of light levels.
Soil and Planting
Horsetail adapts to many soil types as long as they're moist: clayey, silty, or peaty soils are ideal. Since this plant is very invasive through its rhizomes, grow it in a container or delimit its planting area to prevent it from colonizing your entire garden.
Pruning and Cutting
Cut the stems to ground level in late winter, just before spring growth begins. This encourages vigorous new shoots to emerge. No summer pruning is needed; the plant manages its own shape naturally.
Fertilizing
Horsetail needs very little fertilizer thanks to its powerful root system. A light application of compost or organic matter in spring is more than enough. Avoid excess nitrogen, which could promote excessive growth.
Diseases and Pests
Horsetail is extremely hardy and rarely affected by diseases or pests. Its main issue is rather its invasive nature: monitor its expansion regularly and don't let its rhizomes colonize unwanted areas.
Did you know?
Field horsetail is a relic from the Carboniferous period: its fossil ancestors formed giant forests over 30 meters tall, long before the dinosaurs! Today, it has been used since antiquity to clean and polish tin and copper utensils thanks to its high silica content, earning it the nickname "rat's tail".
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Rough horsetailEquisetum hyemale
- Dwarf horsetailEquisetum scirpoides
- Water horsetailEquisetum fluviatile
- Marsh horsetailEquisetum palustre
- Woodland horsetailEquisetum sylvaticum
- Giant horsetailEquisetum telmateia
Tips generated and checked by Viridia — adapt them to your local climate.