Forsythia 'Courtasol' (syn. 'Gold Tide™') is as tough as nails but with a unique form: stems reach only 18 inches before arching down and running along the ground to yield a 5-foot-wide spread. Grapefruit-yellow flowers appear in early spring.
Reported to grow well in Zone 5 but with little flowering due to frost damage. Snow cover insulates flower buds. For best performance, use soaker hose on timer until established. Flowers best in full sun, adaptable to any soil. Cut back hard after flowering if entangled.
Greenwood cuttings in late spring/early summer; semi-ripe cuttings in late summer. Same problems as species: Arabis mosaic virus, stem gall, dieback, root knot nematode, leaf spot.
Paperbark Maple (Acer griseum): Four-Season Tree with Peeling Cinnamon Bark
Common Yarrow (Achillea millefolium): Tough Spreading Perennial for Pollinators
Mescal / Parry's Agave (Agave parryi): Compact, Blue-Gray Rosette with Cream Flowers
Alpine Lady's Mantle (Alchemilla alpina): Tiny, Silver-Edged Leaves for Rock Gardens
Ornamental Onion 'Globemaster' (Allium 'Globemaster'): Giant Purple Spheres for Late Spring Drama
Willow Blue Star (Amsonia tabernaemontana): Blue Flowers and Yellow Fall Foliage
Rue Anemone (Anemonella thalictroides): Delicate White Pinwheel Flowers for Shade
Pussy-Toes (Antennaria spp.): Low Gray-Green Mats for Stepping Stones and Walls
Rocky Mountain Columbine (Aquilegia caerulea): Native Blue and White Beauty
Jack-in-the-Pulpit (Arisaema triphyllum): Native Woodland Perennial with Hooded Flowers
Red Chokeberry (Aronia arbutifolia): Multi-Season Native Shrub
Winter Begonia (Bergenia ciliata): Bold Foliage for Shade Gardens
Heartleaf Bergenia (Bergenia cordifolia): Four-Season Shade Perennial
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