Robust Male Fern
Dryopteris filix-mas 'Robusta'
SKU
3626
A large, vigorous fern that may reach 4 feet tall at maturity. Western U.S. native that is widely adaptable to any cool moist place. Long, leathery fronds are upright and stately, unfurling in yellow-green then darkening to emerald. Excellent choice that retains its foliage even in cold weather. Semi-evergreen. Shade to part shade. Rapid growth to 4 feet, 2 feet or more wide. Hardy.
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4 - 8 Change
Full shade
Water regularly to maintain evenly moist soil - weekly, or more often.
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| Botanical Pronunciation | drye-OPP-ter-iss FY-liks mas roh-BUS-tuh |
|---|---|
| Lore | In ancient Europe, ferns were often associated with incantations and spells granting one invisibility because the plants lacked seeds and seemed to magically appear. Male fern is grown commercially as an anthelminthic, to expel worms. |
| Average Size at Maturity | Quickly forms foliage clumps 4 ft. tall, 2 ft. wide, or wider. |
| Bloom Time | Prized for foliage. |
| Design Ideas | A perfect space filler to flesh out shade gardens and landscapes under large shade trees or groves. Exceptional for filling gaps in rock waterfalls where shade prevents other plants. A good problem solver for narrow sideyards and fleshes out difficult north facing foundation planting. |
| Deciduous/ Evergreen | Semi-evergreen |
| Foliage Color | Green |
| Garden Style | Asian/Zen, Cottage, Rustic |
| Growth Habit | Clumping |
| Growth Rate | Fast |
| Landscape Use | Border, Container, Firescaping/Fire Wise, Mass Planting, Rock Garden, Woodland Garden, Cutting Garden, Edging, Ground Cover |
| Light Needs | Full shade |
| Soil Needs | All-Purpose Plant Food |
| Special Feature | Clump Forming, Extreme Cold Hardiness, Gift Plant, Naturalizes Well, North American Native Selection, Shade Loving, Tolerates Acidic Soil, Tolerates Wet Soils, Fast Growing |
| Water Needs | High |
| Watering Needs | Water regularly to maintain evenly moist soil - weekly, or more often. |
| Key Feature | Woodland Garden Plant |
Provide enriched, slightly acidic, well-drained soil, with shelter from drying winter winds. Water deeply, regularly during the first growing season to establish root system; once established, water regularly to maintain evenly moist soil. Fertilize regularly during growing season. Cut back old fronds after new growth begins in spring.
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