Plant Overview
Often called the Tall Tutsan or the Jewel of the Garden, Hypericum × inodorum is a hybrid St. John’s Wort that trades the medicinal fame of its cousins for pure, ornamental drama. While many plants are grown for their flowers, this shrub is a florist’s favorite because of its stunning, waxy berries that look like polished beads scattered across its branches.
🔍 How to Identify
- 🌼 The Flowers: Produces cheerful, buttercup-yellow flowers with a prominent explosion of "eyelash-like" stamens in the center.
- 🍒 The Berries: Following the blooms, heavy clusters of fleshy berries appear. Depending on the cultivar, these can range from creamy white and salmon pink to deep, glossy red or chocolate brown.
- 🍃 The Foliage: Features oval, dark green leaves that grow in pairs along woody stems. If you crush them, they release a slightly medicinal, spicy scent.
🏡 In Your Garden
- 💧 Moisture Matters: Unlike some drought-tolerant St. John's Worts, this hybrid prefers "cool feet." It thrives in moist, well-drained soil and will wilt dramatically if left to bake in dry, sandy earth during a heatwave.
- ✂️ Pruning for Berries: Since the best berry displays happen on new growth, it benefits from a "hard haircut" in early spring. Cutting it back significantly encourages the lush, berry-heavy stems that are so popular in autumn floral arrangements.
⚠️ Safety & Toxicity
- 🐾 Mildly Toxic: Like many members of the Hypericum genus, this plant contains hypericin.
- ☀️ Photosensitivity: If ingested by pets (especially horses or white-furred animals), it can cause extreme sensitivity to sunlight, leading to skin irritation and blistering. It is generally best kept out of reach of curious nibblers.
✨ Fun Fact
Despite its name inodorum (which means "unscented" in Latin), many gardeners claim the leaves actually have a distinct, slightly goaty smell when bruised, leading to its old-fashioned folk name: "Stinking Tutsan."
Detailed Care Instructions
To grow Hypericum X Inodorum (also known as St. John's Wort), you can follow these steps:
- Choose a suitable location: Hypericum X Inodorum plants prefer full sun to partial shade. Select a location in your garden that receives at least 6 hours of direct sunlight each day. The soil should be well-draining.
- Prepare the soil: Dig the soil to a depth of about 12 inches and remove any weeds or rocks. Mix in organic matter such as compost or well-rotted manure to improve the soil's fertility and drainage.
- Planting: Dig a hole slightly larger and deeper than the nursery container of your Hypericum X Inodorum plant. Gently remove the plant from its container and place it in the hole. The top of the root ball should be level with or slightly above the soil surface. Backfill the hole with soil and firm it gently around the plant.
- Watering: Water the plant thoroughly after planting to help settle the soil and remove any air pockets. During the first few weeks, water the plant regularly to keep the soil evenly moist but not waterlogged. Once established, Hypericum X Inodorum plants are relatively drought-tolerant and only need occasional watering.
- Pruning: Prune your Hypericum X Inodorum plant in early spring to remove any dead or damaged branches. You can also trim back the plant to maintain its shape or to promote branching. Avoid heavy pruning as this can reduce flower production.
- Fertilizing: Apply a balanced, slow-release fertilizer in early spring to provide the plant with necessary nutrients. Follow the package instructions for application rates. Alternatively, you can top-dress the soil with compost or organic matter each year to replenish nutrients.
- Mulching: Apply a layer of organic mulch, such as wood chips or straw, around the base of the plant to help retain moisture, suppress weeds, and regulate soil temperature.
- Pests and diseases: Hypericum X Inodorum plants are generally resistant to most pests and diseases. However, keep an eye out for aphids or leaf spot diseases. If necessary, control them by using insecticidal soap or fungicides.
- Division: After a few years, your Hypericum X Inodorum plant may become overcrowded. You can divide it in early spring or late fall by carefully digging up the plant and separating it into smaller sections. Replant the divisions in prepared soil and water thoroughly.
By following these steps, you should be able to successfully grow Hypericum X Inodorum plants in your garden.
Hypericum X Inodorum plant should be watered regularly to keep the soil moist but not waterlogged. It is important not to let the plant completely dry out between waterings. The frequency of watering will depend on the environment, but as a general guideline, the plant should be watered when the top inch of soil feels dry to the touch. When watering, it is best to use tepid water and to avoid getting the foliage wet. It is also important to allow the water to drain away completely and not let the plant sit in standing water.
To fertilize Hypericum X Inodorum plants, apply a balanced fertilizer, such as a 10-10-10 or 20-20-20 mix, in the spring when new growth appears. Use a slow-release fertilizer to avoid overfeeding and burn the roots. Follow the package instructions for application rates. Avoid fertilizing during the fall and winter months when the plant is dormant.
For optimal growth, it is suggested to plant this species in a well-drained soil mixture that is composed of equal parts of sand, peat moss, and vermiculite. The soil pH should be slightly acidic, ranging between 5.5 to 6.5. The plant prefers a soil that is rich in organic matter and should be fertilized using an all-purpose fertilizer every four weeks during the growing season. Additionally, it is recommended to periodically check the soil moisture levels and to keep the soil evenly moist, not allowing it to become overly dry or waterlogged.
Hypericum X Inodorum, also known as the hybrid St. John’s Wort, can be propagated through stem cuttings or division.
To propagate through stem cuttings, select healthy stems with no blooms or buds, and cut them at a 45-degree angle. The cuttings should be about 6 inches long. Remove the leaves from the lower half of the stem, and dip the cut end in rooting hormone. Plant the cutting in a pot with well-draining soil, and keep it in a warm and humid location with indirect sunlight. Water the cutting regularly to keep the soil moist but not waterlogged. The cutting should root in about 4-6 weeks.
To propagate through division, dig up the plant and carefully separate the sections of the root system. Each division should have a healthy stem and a good root system. Replant the divisions in pots or in the ground, and water them well. Keep the new plants in a partly shaded location and water them regularly until they are established, then gradually move them to full sunlight.
It is important to note that Hypericum X Inodorum may be invasive in some regions, so it is best to check with local authorities before propagating or planting it.
