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Coreopsis grandiflora

 
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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Species: grandiflora (gran-dih-FLOR-uh) (Info)

2 vendors have this plant for sale.

6 members have or want this plant for trade.

Category:
Perennials

Height:
12-18 in. (30-45 cm)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage:
Unknown - Tell us

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

By yvana
Thumbnail #1 of Coreopsis grandiflora by yvana

By poppysue
Thumbnail #2 of Coreopsis grandiflora by poppysue

By FlowerManiac
Thumbnail #3 of Coreopsis grandiflora by FlowerManiac

By FlowerManiac
Thumbnail #4 of Coreopsis grandiflora by FlowerManiac

By MOLLYBEE
Thumbnail #5 of Coreopsis grandiflora by MOLLYBEE

By Trox
Thumbnail #6 of Coreopsis grandiflora by Trox

By Lanan
Thumbnail #7 of Coreopsis grandiflora by Lanan

There are a total of 14 photos.
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Profile:

4 positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive achoogardner On Jun 16, 2005, achoogardner from Red Oak, NC
(Zone 7b) wrote:

This is an easy and beautiful plant. Mine has been blooming none stop after being in the ground for two weeks. It loves full sun and doesn't need much water. My neighbor comments me on it every time she is over!

Positive LilyLover_UT On Jan 16, 2005, LilyLover_UT from Ogden, UT
(Zone 5b) wrote:

This is a short-lived perennial, often blooming itself to death. But it's easy to start from seed, and it self-sows nicely.

Neutral bluetopazskye On Jul 2, 2004, bluetopazskye from Covington, KY wrote:

I put in 4 Early Sunrise along a border and was really happy with the spread and floral display. They make a beautiful round high mound of flowers. They do need daily upkeep to deadhead and flies are attracted to them. After two seasons, all four did not come back this year. I found on one site the note that coreopsis tend to live 3-4 seasons, but only after I replaced them with four more. That's disappointing. Any other experiences with short life span?

Positive sweezel On May 1, 2004, sweezel from McKinney, TX
(Zone 8a) wrote:

Beautiful when tall and covered in lots of blooms and buds in May. Here in zone 8a/7b (North Texas), they seem to like part sun very well. Mine is getting 4 or 5 hours of morning sun and thrives. I have had it in the ground a year and fertilized it lightly once with fish meal, once with alfalfa meal this spring, but that is all. It is in barely amended black alkaline clay and very happy. The leaves are evergreen with a pretty, flat, maybe 6 inch clump of leaves when not flowering. It stays that way until early spring when the stalks start growing and it gets about 24 inches tall when flowering.

Positive DavidPat5 On Jul 27, 2002, DavidPat5 from Chicago, IL wrote:

DO NOT FERTILIZE Coreopis. They are very easily burned. I used Miracle Grow on mine and many of the new buds are turning brown before they flower. They have been flowering profusely since mid June. They dont seem to be very good cut flowers.

Neutral gardener_mick On Nov 8, 2000, gardener_mick from Wentworth, SD
(Zone 4a) wrote:

These are a perennial in zones 4-9. They need full sun and well drained soil that is fertile and somewhat moist. They produce 1-1 1/2" yellow to orange, single to double flowers on top of 1-2' stems. The foliage is a deep green. They bloom from early to late summer and may bloom in fall if deadheaded.

Regional...

This plant has been said to grow in the following regions:

San Leandro, California
Bartow, Florida
Hawkinsville, Georgia
Monroe, Georgia
Stone Mountain, Georgia
Villa Rica, Georgia
Noblesville, Indiana
Albuquerque, New Mexico
Red Oak, North Carolina
Oklahoma City, Oklahoma
Mckinney, Texas
Kalama, Washington



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