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A picture of a Square Stalked St. John's Wort

Square Stalked St. John's Wort

Hypericum tetrapterum

Also known as

St. Peter's Wort, Peterwort, Four-Winged St. John's-Wort

Full Sun
Moderate care
Frequent watering
Frost Hardy

9a

USDA zone

-7°C

Minimum temperature

Expected size

Height
Spread

30cm

Max

1m

20cm

Min

Flowering

  • spring
  • summer
  • autumn
  • winter

More images of Square Stalked St. John's Wort

A photo of Square Stalked St. John's Wort
A photo of Square Stalked St. John's Wort

Square Stalked St. John's Wort Overview

This rafting aquatic plant is ideal for ponds as it creates good habitats for pond life. The attractive leaves are a bright green covered in fine hairs. The delicate star shaped, yellow flowers contrast stunningly against the foliage making this an eye catching piece for your pond.

Common problems with Square Stalked St. John's Wort

How to propagate Square Stalked St. John's Wort

Seed

Sow the seeds in the autumn.

Cuttings

Root softwood cuttings in late spring.

Special features of Square Stalked St. John's Wort

Attracts bees

Other uses of Square Stalked St. John's Wort

Grown for their conspicuous, yellow flowers with prominent stamens. This shrub is very attractive to bees.