Plant Calculator
Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Coreopsis grandiflora you will need.
*Correct and successful spacing is complex and depends on project conditions.
Coreopsis grandiflora
Coreopsis
- Mass Plantings
- Container Specimen
- Attracts Wildlife
- Category: Seasonal, Tropical, and Perennial Color, Discontinued
- Hardiness Zone: 5b
- Height: 4 Feet
- Spread: 4 Feet
- Bloom Color: Yellow
Perennial reaching up to four feet in height, displaying golden-yellow blooms spring to fall. Very vigorous grower that can fill a flower bed quickly, it self propagates easily returning in the spring. Cut flowers dry well in arrangments. Blooms vigorously with deadheading, however is fine without it.
'Early Sunrise' has semi-double flowers early summer to early fall.
Jethro Tull (PP#18798) is a cross between the 'Zamphir' and 'Early Sunrise' cultivars with broader petals and an extended blooming period. Mature size is 15-18 inches tall with 18-24 inch spread. The petals hold their funnel shape much longer.