Plant spacing is based on the ultimate width of the plants. This figure is normally given as a range; for example, 3-5’. If you live in a cold climate and/or want plants to fill in more quickly, plan to space at the shorter end of the range. If you live in a warm climate, are on a limited budget, or are willing to wait longer for plants to touch, use the higher end of the range. Using the larger number is recommended when calculating distance from a building or structure. There’s really no such thing as "maximum spacing": if you don’t want your plants to touch, you can space them as far apart as you’d like. All plant spacing is calculated on center, or in other words, the centers of the plants are spaced one half of their eventual width apart:
Unless you are planting in a straight line, as you might for hedges or edging, space your plants in a staggered or zig-zag pattern for a more interesting and naturalistic look:
Hand-picked at our greenhouse
Shipped to your door
Arrives as young plant
DescriptionThree things make royal fern (or Osmunda regalis) instantly recognizable in the garden: its textured foliage, size, and spikes of flowers! The fronds have broad leaflets, resembling a pea-relative instead of a fern. They unfurl each spring to form a massive habit, reaching up to 6 feet tall and 3 feet wide. In late summer, it's topped with rusty-brown spikes of flowers.
Wait, why does this fern have flowers? Technically, they aren't flowers at all! Ferns reproduce using spores found on the underside of the leaves - appearing as red or bronze dots (or sori). However, the royal fern has a unique strategy. The spores appear on brown tassel-like structures that rise above the fronds and resemble flower spikes. That's why royal fern is also referred to as 'flowering fern'.
Royal ferns are native to the moist woodlands and streams of North America, making them an excellent choice for water and rain gardens. They are resistant to deer, rabbits, and disease and tolerant of clay and standing water. Give them plenty of space, water, and shade, and we're sure they'll thrive!DetailsBotanical name: Osmunda regalis Common name: Royal fern, blooming fern, bog onion, buckhorn brake, flowering fern, ditch fern, king fern, osmund royal, rusty fern, water fern Zone: 3 – 9 Sun exposure: Shade (< 4 hours sun) to part-sun (4-6 hours sun) Height x width: 2 - 3 'tall and wide Foliage color: Green Season of interest: Year-round Bloom time: Non-flowering Features: Wet soils, rare & unusual, rain gardens, rabbit resistant, native, heat resistant, deer resistant, container plants, cold tolerant, best for beginners Uses: Accents, border, container, ground cover, massing, small spaces, specimen, underplanting, woodland How To GrowSoil: Easily grown in average, medium to wet soils. Prefers consistently moist, humus soils that are rich in organic matter. Light: Part-sun (4-6 hours sun) to shade (< 4 hours sun) Water: Grows best in moist and wet soils, and it should not be allowed to dry out. Spacing: 2-3 feet Fertilizing: Apply fertilizer during the growing season if needed, though it generally is not required. Winterizing: No specific care is needed. Cut back old fronds after new growth begins in spring. Maintenance & pruning: Site in locations sheltered from strong winds to protect the fronds. Other than removing old growth in spring, no pruning is needed.