Jethro Tull is a coreopsis with brilliant golden yellow flowers whose petals are neatly rolled into little tubes, giving each bloom a frilly, quilled look. It flowers heavily in early and midsummer.
The plant stays compact at about 18 inches tall and wide, making it a good fit for borders, containers and mass plantings. The flowers are long-lasting in a vase and draw butterflies and bees.
What it looks like
A compact, bushy clump about 18 inches tall and wide. Leaves are narrow, lance-shaped and medium green, 2 to 4 inches long, clustered near the base. Flowers about 2 inches across sit on thin upright stems, with bright golden yellow petals rolled into fluted tubes that flare open at the toothed tips, around a small gold center. At peak bloom the clump is crowded with frilly golden flowers held above the foliage.
Growing it with lavender
It thrives in lavender's sunny, well-drained conditions and blooms at the same time, so its golden flowers make a bright contrast with lavender in early summer.
Care
Plant in full sun in average, well-drained soil; avoid rich, wet soil. Hardy in zones 4-9. Deadhead or shear after the first flush of flowers to encourage more blooms and keep the plant tidy.
At a glance
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Botanical name: Coreopsis
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Flower color: Golden yellow
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Foliage: Medium green
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Growth habit: Compact, bushy clump
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Mature size: 18 in tall × 18 in wide
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USDA hardiness zones: 4–9
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Light: full sun
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Bloom start: Mid-June
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Peak bloom: Early-July
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Bloom pattern: Long Blooming
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Deer resistance: Resistant
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Pollinator value: Great
Sizes and shipping
One full 72-cell plug tray: 72 young starter plugs of this variety (cells about 1⅓ in. wide × 2½ in. deep), rooted and ready to pot up into quarts or gallons. Best for growers and nurseries. Potted plants and plug trays ship during our live-plant seasons, March 1–May 31 and October 1–November 30; June through September is local pickup only. Plugs, potted plants and trays do not ship to AZ, CA, HI, ID, NV, OR, UT or WA.