Large-flowered St. John's wort typically starts flowering in June.
large-flowered St. John's wort
Hypericum kouytchense
Cycle:
Perennial
Watering:
Average
Propagation:
Cutting,Division,Layering Propagation,Seed Propagation,Stem Propagation
Hardiness Zone:
6 - 9
Flowers:
Yellow Flowers
Sun:
Full sun,part shade
Leaf:
Yes
Leaf Color:
green
Growth Rate:
High
Maintenance:
Low
Drought Tolerant:
Yes
Salt Tolerant:
Yes
Invasive:
Yes
watering
Large-flowered St. John's Wort should be watered every 10-14 days, depending on the type of soil and amount of sunlight it is exposed to. If planted in a well-draining soil, water more frequently, as the soil will dry out faster. Water the soil until it is saturated, and then allow it to slightly dry out before watering again. During the hottest parts of the summer, or if your soil drains quickly, water every 7 days. During cooler or wetter times during the year, you can extend the watering schedule to 14 days.
sunlight
Large-flowered St. John's wort (Hypericum kouytchense) does best in full sun, although it can tolerate partial shade. It needs at least 6 hours of direct sunlight each day and should be placed in a spot that is free from obstruction. In hot climates, it may need some protection from the sun during the hottest time of day to prevent scorching. When grown indoors, it needs to be placed near a window where it can receive a minimum of 6 hours of direct sunlight daily. Otherwise, it may not flower or produce fruits.
pruning
Large-flowered St. John's wort (Hypericum kouytchense) should be pruned twice a year, once in the spring and once in the fall. In the spring, prune the plant to remove dead wood, and to encourage new growth and flowering. Cut the stems back to 2 or 3 buds from the previous year's growth, without cutting the crown of the plant. In the fall, prune the plant to thin out the stems, increasing airflow and light penetration into the center of the plant. This will also encourage bushier growth when new stems emerge in the spring. Avoid pruning in summer, as the plant is dormant and may not respond well to drastic pruning.