'Sparkling Stars White' Masterwort (Astrantia)
Perennial
- Highly fragrant white star-like blooms!
- Long-lasting flowers rebloom all summer long.
- Loved by bees & tolerant of clay soils.
- Great for cut flower gardens or perennial borders.
- Zones 4-7, sun/part sun, 28” tall x 36” wide at maturity.
ZONE
EXPOSURE
HEIGHT
Description
Masterworts are easy-to-grow perennials, making them easy to love. They're low maintenance, deer resistant, disease resistant, cold hardy, and tolerant of wet, even clay, soils. This perennial also dries fabulously and looks terrific in cut flower arrangements. Plant in full-to-part sun environments with moist soils, and you'll receive the best performance!
Details
Common name: Masterwort, great masterwort, greater masterwort
Zone: 4 – 7
Sun exposure: Sun (> 6 hours sun) to part-sun (4-6 hours sun)
Height x width: 2' x 1.5'
Flower color: White, green
Foliage color: Green
Season of interest: Spring and summer
Bloom time: Summer
Features: Rare & unusual, cold tolerant, cut flower, fragrant, pollinator-friendly, rain garden, low maintenance, wet soils, deer-resistant
Uses: Accent, border, container gardening, cottage gardening, edging, ground cover, massing, naturalizing, rain garden, underplanting, waterside, woodland, cut flower, pollinator garden
How to Grow
Light: Part sun (4-6 hours sun) to sun (6+ hours sun)
Water: Likes soil consistently moist. Adding mulch can help retain soil moisture.
Spacing: 18-24 inches
Fertilizing: Fertilize early spring to produce healthy flowers with a 5-10-5 fertilizer blend.
Winterizing: No specific care is needed. Foliage dies back in winter and can be cleared away in early spring before the plant sends up new shoots.
Maintenance & pruning: Deadhead spent flowers to tidy up appearance and encourage rebloom. In optimal conditions, it will slowly spread by stolons.
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:
Not sure just how many plants will fit in your garden? Our calculator gives you the exact amount of plants required for your space. Simply update the values and the calculator will re-calculate accordingly. Spacing information can be found in the 'How to Grow' tab on each plant's page.