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Rodgersia aesculifolia
Chinese rodgersia
Rodgersia aesculifolia
Rodgersia aesculifolia, commonly known as Fingerleaf Rodgersia or Chestnut-leafed Rodgersia, is a striking, architectural herbaceous perennial valued for its bold foliage and showy summer flowers. Its large, bronzy green leaves are deeply veined and resemble those of a horse chestnut, hence its common name. In early to mid-summer, it produces impressive, upright, branched plumes of creamy white to pale pink flowers that rise above the foliage. This plant thrives in moist, humus-rich soil and partial to full shade, making it an excellent choice for woodland gardens, boggy areas, or alongside water features. It provides a strong textural element and a lush, exotic feel to the landscape.
CategoryDetails
Plant TypePerennial plant
Estimated Plant Lifespan12 years lifespan
Sun Requirements2-4 hours direct sunlight (Partial Shade)
Pollination

Method: animal

Notes: Pollinated by insects, primarily bees, which are attracted to its creamy white to pink flower plumes. No manual pollination is typically required for successful growth or seed production.

Watering Requirements

Method: top water

Frequency: keep constantly moist

Notes: Rodgersia requires consistently moist soil and does not tolerate drying out, especially during hot periods. It thrives in locations near water bodies or in boggy garden areas where moisture is abundant. Ensure good drainage to prevent waterlogging, but aim for a continually damp root zone.

Humidity Requirements

Level: moderate to high

Maintenance: Planting in shaded, sheltered locations with good air circulation helps maintain localized humidity. Mulching around the base of the plant can also help retain soil moisture, contributing to humidity levels near the foliage.

Care InstructionsProtect Rodgersia from strong winds, as their large leaves can be easily damaged or tattered. Remove spent flower stalks after blooming to maintain a tidy appearance, though some gardeners leave them for winter interest. In colder zones (USDA Zone 5), applying a winter mulch can provide additional root protection. Divide clumps every few years in spring or autumn to maintain vigor and size.
Dryopteris filix-mas
male fern
Dryopteris filix-mas
Ferns like the Male Fern thrive in similar moist, shaded environments. Their delicate, finely textured fronds offer a beautiful contrast to the bold, coarse leaves of Rodgersia, creating a lush, layered effect in a shade garden.
Hylotelephium spectabile
Butterfly Stonecrop
Hylotelephium spectabile

Sedum species require full sun and very well-drained, even dry soil conditions. Planting them with Rodgersia, which thrives in moist shade, would lead to poor performance for the Sedum and an unsuitable environment for both plants.

Lavandula angustifolia
Common Lavender
Lavandula angustifolia

Lavender needs full sun, excellent drainage, and even poor soil to thrive. It would quickly suffer from root rot and decline in the consistently moist, humus-rich soil preferred by Rodgersia, making them incompatible companions.

Yucca filamentosa
common yucca
Yucca filamentosa

Yucca requires full sun and extremely well-drained, dry conditions. Its drought-tolerant nature is completely at odds with Rodgersia's need for consistent moisture, making them unsuitable for co-planting.

Slugs

Slugs are a common pest for Rodgersia, especially in moist conditions. They feed on the large, succulent leaves, creating irregular holes and ragged edges, particularly on new growth. Damage is often visible at night or on damp mornings, sometimes accompanied by silvery slime trails.

Snails

Similar to slugs, snails also cause significant damage to Rodgersia leaves by chewing holes. They are typically more active in damp, cool conditions. Evidence includes holes in leaves and the presence of their shells.

Vine Weevil Larvae

While less common than slugs/snails, vine weevil larvae can feed on the roots of Rodgersia, leading to wilting, stunted growth, and in severe cases, the collapse of the plant. Adult weevils chew notches in leaf margins, but larval root damage is more detrimental.

Steps:

    • Choose a mature, healthy clump of Rodgersia, ideally in early spring as new growth begins to emerge, or in autumn after flowering.
    • Carefully dig up the entire plant clump, trying to retain as much of the root ball as possible.
    • Gently shake off excess soil to expose the rhizomes (underground stems) and roots.
    • Using a sharp, clean knife or spade, divide the rhizome into sections. Ensure each section has a healthy portion of roots and at least one 'eye' or bud (where new growth will emerge).
    • Replant the divisions immediately into prepared soil that is rich in organic matter and moist. Plant at the same depth as the original plant.
    • Water thoroughly after planting and keep the soil consistently moist until the new divisions are established.

Iron Phosphate Slug Pellets

An effective and pet-safe way to control slugs and snails, which are common pests for Rodgersia, without harming wildlife.

Compost or Leaf Mold

Enhances soil fertility, improves drainage while retaining moisture, and provides essential organic matter that Rodgersia thrives in. It supports robust growth and health.

Shredded Bark Mulch

Helps retain soil moisture, suppresses weeds, and regulates soil temperature, all of which are beneficial for Rodgersia's growth. It also breaks down to add organic matter.

Diatomaceous Earth

A natural, non-toxic powder that can be sprinkled around the base of plants to deter slugs and snails by creating a physical barrier that dehydrates them.