Shrubby St. John’s wort is an amazing plant that shows us how to be strong and adaptable, even in harsh winters. It looks great too, with its green leaves turning golden yellow in the fall. And it provides a safe haven for animals during the cold months when everything else is bare.
Select Appropriate Mulch: Choose organic mulch like straw, pine needles, wood chips, or shredded leaves.
Apply Mulch: Spread a 2-4 inch layer around the base of the plant. Ensure the mulch doesn’t touch the stems to prevent rot.
Reapply if Needed: If mulch compacts over time, add a fresh layer to maintain insulation.
Water Before Freezing: Thoroughly water the plant before the first hard freeze to ensure it has enough moisture.
Limit Watering: After the ground freezes, reduce watering frequency. Check soil moisture during mild spells, ensuring it remains slightly moist.
Prune in Late Winter or Early Spring: Prune before new growth starts.
Remove any dead, damaged, or diseased branches.
Shape the Plant: Trim to maintain the desired shape and size. Cut just above a leaf node or bud to encourage healthy growth.
Avoid Heavy Pruning in Fall: Pruning in fall can stimulate new growth that may be damaged by cold temperatures.
Cover the Plant: Use burlap, frost cloth, or an old blanket to cover the plant during extremely cold nights. Support the covering with stakes to avoid contact with the leaves.
Provide Wind Protection: Erect a windbreak using a fence or hedge to shield the plant from harsh winter winds.
Move Container Plants Indoors: If the plant is in a container, move it to a sheltered location, such as a garage or enclosed porch, to protect it from freezing temperatures.
These steps will help ensure your shrubby St. John’s wort remains healthy and robust throughout the winter season, ready to flourish come spring.
Follow these key points:
Proper winter maintenance will help your shrubby St. John’s wort remain strong and adaptable, even in harsh winters, and ensure it continues to thrive come spring.