The Hypericum x inodorum ‘Red Star’ (Red Star Hypericum) is a favored ornamental shrub, celebrated for its unique visual appeal. This plant brings vibrant red berries in the fall and winter, following attractive yellow flowers that bloom throughout the summer. Its relatively straightforward care requirements make it a suitable option for many home gardeners seeking a multi-seasonal plant.
Understanding Red Star Hypericum
Red Star Hypericum is a deciduous or semi-evergreen shrub, varying with climate, and typically reaches a mature height of 2 to 3 feet with a similar spread. Its growth habit is often described as upright and mounded, forming a compact shape. The foliage consists of oval, dark green leaves that can develop reddish tints, especially as the season progresses.
The shrub produces small, star-shaped yellow flowers from late spring through summer. These cheerful blooms give way to its most distinctive feature: glossy, apple-red berries that develop in late summer and persist into winter, providing extended ornamental interest. This plant is adaptable to USDA hardiness zones 6 to 9.
Planting Your Red Star Hypericum
Selecting an appropriate site is important for optimal berry production and overall plant health. Red Star Hypericum thrives in locations receiving full sun to partial shade, ideally with at least 4-6 hours of direct sunlight daily to encourage abundant berries. While adaptable to various soil types, it requires well-draining conditions to prevent root issues.
The best time to plant Red Star Hypericum is during the mild weather of spring or fall. To plant, dig a hole that is at least twice the width of the plant’s root ball and as deep as its container. Carefully remove the plant from its container, ensuring the top of the root ball is level with the surrounding soil, then backfill the hole. After planting, water the shrub thoroughly to help settle the soil around the roots.
Ongoing Care for Red Star Hypericum
Once established, Red Star Hypericum exhibits drought tolerance, requiring less frequent watering. During its first growing season, consistent watering is beneficial to help it develop a robust root system. After the initial year, watering is typically needed only during prolonged dry periods or extreme heat.
A balanced slow-release fertilizer can be applied in early spring to support healthy growth and fruit production. Over-fertilizing should be avoided, as it can promote excessive foliage at the expense of flowers and berries. Pruning can be performed in late winter or early spring to maintain its compact shape, control size, and encourage new growth, which in turn leads to more flowers and berries. In colder climates, applying a thick layer of mulch around the base of the plant can help insulate the roots and provide winter protection.
Addressing Common Problems
Red Star Hypericum is generally considered resistant to many common pests and diseases. However, some issues can still arise, such as aphids or spider mites. Fungal diseases like rust or leaf spot can also affect the plant, typically appearing as yellow, red, or brown spots on leaves. If fungal issues appear, removing infected leaves and ensuring good air circulation can help manage the problem.
Environmental factors can also lead to problems, such as poor berry production, which is often a result of insufficient sunlight or improper pruning techniques. Yellowing leaves may indicate overwatering or a nutrient deficiency. Ensuring the plant is in well-draining soil and receiving adequate light can resolve many of these issues.
Safety Considerations
While Hypericum species, including ‘Red Star’ Hypericum, are generally thought to have low toxicity, ingesting any part of the plant, especially the berries, can cause mild gastrointestinal upset. It is advisable to exercise caution around young children and pets who might be tempted to consume the berries. Additionally, the sap from Hypericum plants can cause skin irritation in individuals with sensitive skin.