
St. John's wort
Hypericum perforatum 'Topas'
Cycle:
Herbaceous Perennial
Watering:
Average
Hardiness Zone:
3 - 8
Flowers:
Yellow Flowers
Sun:
Full sun,part shade
Leaf:
Yes
Leaf Color:
green
Growth Rate:
Low
Maintenance:
Low
Drought Tolerant:
Yes
Salt Tolerant:
Yes
Care Level:
Medium
watering
St. John's wort (Hypericum perforatum 'Topas') should be watered regularly but infrequently, usually every 7 - 14 days. You should provide deep, thorough waterings each time, providing 1 inch of water if rainfall is not sufficient. You should water in the morning as the cooler air and hours of sunshine will help the soil dry out and the plant to take up the moisture. Make sure to check if the soil is dry up to 2 inches deep before watering again.
sunlight
St. John's wort (Hypericum perforatum 'Topas') prefers full sun, which means at least 6 hours of direct sunlight each day. It should be placed in an area that receives sunlight from early morning to late afternoon and the amount of shade it can tolerate varies depending on how long and intense the sunlight is. When there is strong, direct sunlight for 8 hours or more, St. John's wort can tolerate less shade. The plant grows best when the sun is at its brightest, between 10am and 4pm. In areas with a mild climate, St. John's wort could perform well with afternoon shade, but if the climate is hot and sunny it should not receive any shade.
pruning
For pruning St. John's wort (Hypericum perforatum 'Topas'), it is best to wait until late winter or early spring. Pruning should only be done when the plant is dormant and no new growth is visible. When pruning is complete, ensure any clippings are disposed of to prevent any new growth. Reduce the size of the plant by removing any dead or dying branches, leaves and flowers that are no longer productive. Cut back stems that have grown too large, making sure to leave plenty of healthy, green growth behind. Avoid cutting too much as this can put a strain on the plant. Lastly, thin out the foliage for maximum health and air circulation.