Hot summer color!
Want a low-maintenance perennial that can take the summer heat? ‘Mercury Rising’ threadleaf coreopsis doesn’t set seed, so you won’t have to deadhead to get continuous blooms. Its rich red flowers don’t fade in the sun, either. Instead, they get larger as they mature, growing up to 2 inches wide. Give disease-resistant ‘Mercury Rising’ a place near the front of the border, and you’ll draw lots of butterflies to an easy-to-see spot!
Threadleaf coreopsis
Coreopsis hybrid ‘Mercury Rising’
Type Perennial
Blooms Rich red from early summer through fall
Light Full sun
Soil Well-drained
Size 15 to 18 in. tall, 24 in. wide
Cold-hardy USDA zones 5 to 9
Heat-tolerant AHS zones 9 to 1
Source Great Garden Plants
