Hypericum elodes aka Marsh St. John's Wort

Taxonomy

Hypericum elodes, commonly known as marsh St. John's-wort, is a super rare, marsh or submerged, creeping perennial plant native to Western Europe. It grows up to 15cm tall and has soft, densely woolly grey-green leaves that are about 1.5cm long. During the summer, it produces saucer-shaped, bright yellow flowers that are approximately 1cm across. This plant thrives in a bog garden or at a pond margin. When grown as a houseplant, Marsh St. John's Wort requires regular watering and does best in long-lasting, direct light. It should be placed less than 1 foot from a window. Additionally, it prefers well-draining soil and doesn't usually require added fertilizers if repotted each time it doubles in size.

Common names

Marsh St. John's Wort, Marsh St John's Wort, Marsh Saint John's Wort

How to care for Marsh St. John's Wort

Water

Marsh St. John's Wort should be watered regularly, allowing the soil to dry out between waterings.

Soil

Marsh St. John's Wort loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

Lighting

Marsh St. John's Wort thrives in bright and direct sunlight. To ensure your plant receives enough light to survive, place it less than one foot from a window. The current weather in your area may affect the placement in your home. For example, if you live in a region that has longer and more intense periods of sunlight, then you may want to place the plant farther away from the window to avoid direct sunlight and reduce the risk of sunburn. Alternatively, if you live in a region with relatively milder temperatures and less intense sunlight, then you may be able to place the plant closer to the window for increased exposure. Ultimately, the current weather in your area should be taken into consideration when determining the best placement for your Marsh Saint John's Wort.

Toxicity

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.

Fertilizer

The growth rate of Marsh St. John's Wort is slow and it doesn't necessitate additional fertilizing. By changing the soil in its pot annually, the plant should be provided with adequate nutrition. It is crucial to keep in mind that plants derive their energy from the sun, not fertilizers.


More info:
Wikipedia