Achillea abrotanoides is a herbaceous perennial flowering plant that grows up to 16 inches (40 cm) tall. The stem is subglabrous to …
Browsing: Zone 4a
These flowering plants are rated USDA Hardiness Zone 4a. They can tolerate cold down from −30 °F (−34.4 °C) to −25 °F (−31.7 °C).
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Primula elatior (Oxlip) is a herbaceous perennial plant that grows up to 12 inches (30 cm) tall and up to 10 inches (25 cm) wide …
Veronica americana (American Speedwell) is a herbaceous perennial with glabrous stems that bear terminal or axillary racemes or spikes of …
Dicentra formosa (Pacific Bleeding Heart) is a wide-spreading rhizomatous perennial with abundant lobed leaves, mid-green above and …
Fritillaria pudica (Yellow Fritillary) is a small perennial plant that grows up to 1 foot (30 cm) tall. It has yellow, narrowly bell …
Tulipa orphanidea 'Flava' is a bulbous perennial that grows up to 8 inches (20 cm) tall. The stem is glabrous or hairy. Leaves, vary …
Scilla siberica 'Alba' (White Siberian Squill) is a bulbous perennial with 2 to 4 strap-shaped leaves appearing in early spring at the …
Taraxacum coreanum (Korean Dandelion) is a perennial herbaceous plant sometimes mistaken for Taraxacum albidum. The deeply lobed leaves …
Fritillaria michailovskyi (Michael's Flower) is a bulbous perennial with grey-green lance-shaped leaves and 1 to 4 nodding, broadly bell …
Lonicera japonica (Japanese Honeysuckle) is a twining vine able to climb up to 33 feet (10 m) high or more in trees. Leaves are simple …