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Size Guide

3.5
3.5" Perennial
3 or more $6.00 ea
Regularly: $6.99 ea

Tickseed

Scott's Nursery Ltd.

$3.50
Title

Infuse your outdoor spaces with a nonstop, high-visibility explosion of pure golden sunshine. This timeless garden classic forms an exceptionally lush, bushy mound of deep green foliage that becomes completely blanketed under a dense canopy of large, daisy-like blossoms. Each radiant petal features distinctly fringed, pinking-shear edges that catch the light beautifully, creating a sensational carpet of gold. It delivers a striking, high-impact, cheerful charm that instantly enlivens modern beds, traditional borders, and mixed patio pottery.

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Plant Details

Mature Size:

18" H x 15" W

Zone:

4-9

Watering:

Low to Medium

Type:

Herbaceous Perennial

Growth Rate:

Fast

Light:

Full Sun

Plant Profile

Common Names:

Large-Flowered Tickseed, Bigflower Coreopsis, Greater Tickseed

Scientific Name:

Coreopsis grandiflora

Type:

Filler / Heavy-Blooming Perennial

Growth Details:

Mature Size: 12 to 24 inches tall and 12 to 18 inches wide (Depending on the specific cultivar; dwarf selections stay on the shorter end).

Growth Habit: Compact, heavily branched, upright mounding habit.

Form: Tidy, dense, bushy clump.

Growth Rate: Fast.

Flowering: Profuse sheets of single, semi-double, or double tubular daisy blossoms up to 3 inches across.

Flowering Time: Late spring through early autumn (Continuous from June until the first heavy frost if deadheaded).

Flower Colour: Brilliant golden-yellow or canary-yellow.

Environmental Needs:

Exposure: Full sun. Tolerates a tiny amount of light afternoon shade in exceptionally hot or humid summer climates.

Soil Preferences: Average, lean, sandy, or rocky well-drained garden loams.

Soil Tolerance: Exceptional tolerance for nutrient-poor substrates, dry dirt, and gravelly ground; completely intolerant of heavy, soggy winter clay, which triggers root decay.

Watering: Low to moderate. Allow the top few inches of soil to dry out completely between watering intervals.

Container Role: Performs beautifully as a vibrant, heavy-blooming Filler that introduces continuous structural brightness to mixed patio arrangements.

Special Features:

Disease Resistances: Naturally free of serious insect pests; modern selections boast improved resistance to powdery mildew.

Native Species: Yes (Native to the central and southeastern United States).

Fast Growing: Yes (Achieves full size and heavy first-year flowering on sturdy frames).

Attracts: Intensely alluring to butterflies, native honeybees, wild bumblebees, and beneficial insect pollinators.

Uses: Sunny cutting gardens, pathway framing, container centrepieces, xeriscaping, and front-of-border accenting.

Resistance: Highly deer-resistant and rabbit-resistant due to the light texture and natural compounds of the foliage. Exceptional drought and heat tolerance.

Care Guide

Ornamental & Landscape Value

Seasonal Interest:

Bloom Information: Highly showy, long-season flowers that emerge early and maintain an unbroken blanket of colour for months on end.

Fall Colour: Foliage retains its clean dark green color well into autumn before the entire plant dies back to the ground for winter dormancy.

Garden Value:

Ornamental Interest: Large, continuous semi-double or double golden-yellow flowers contrasting sharply against lush, lobed green foliage mats.

Landscaping Uses: Ideal for mass background drifts, pathway edging, cottage borders, rock gardens, naturalized meadows, and low-maintenance erosion control slopes.

Garden / Landscape Benefits: Highly effective, water-wise perennial that thrives in intense heat zones and poor soils where traditional perennials wilt. Offers one of the longest continuous blooming windows in the garden.

Wildlife & Human Value:

Wildlife Value: Provides an essential, reliable season-long nectar and pollen platform for vital indigenous bees and migrating butterflies.

Human Value: The sturdy, rigid stems make excellent, long-lasting cut flowers for fresh indoor bouquets. Delivers premium, low-maintenance curb appeal for busy homeowners.

Planting & Care Guide

Planting Considerations:

Best Time To Plant: Early spring after hard winter freezes pass, or early autumn to let roots anchor before winter.

Spacing: Space individual plants 12 to 15 inches apart to allow for a dense ribbon of color while preserving excellent air circulation.

Location Tips: Select highly exposed, open garden areas with excellent subsoil drainage; perfect for hot, dry zones or park strips.

Companion Plants: Pairs magnificently with deep blue Salvias, Russian Sage (Perovskia), purple Coneflowers (Echinacea), and blue-toned Ornamental Grasses.

Care:

Light Requirements: Demands absolute full sun to achieve maximum flower production and maintain a sturdy, non-flopping habit.

Moisture Requirements: Needs regular watering during the first growing season to establish roots; becomes exceptionally drought-tolerant and self-sufficient once mature.

Maintenance, Fertilization: Remove faded flower heads down to the nearest stem joint to keep the plant neat and continuously trigger fresh waves of late-season buds. In mid-summer, shearing the entire plant back by one-third will stimulate a completely fresh, compact mound of foliage and autumn flowers. Apply a light application of balanced slow-release fertilizer in early spring; avoid over-fertilizing, which causes weak, floppy growth.

Tolerances:

Punishing summer heat, extended drought, poor or rocky soils, high winds, and browsing wildlife.

Tips For Success:

Thinning / Pinching: Clumps can be easily divided every 2 to 3 years in early spring or autumn to rejuvenate the center of the crown and preserve high flower production.

Support / Staking: Taller straight species may require light support, but standard garden cultivars are naturally stocky and self-supporting through wind and rain.

Special Needs: Absolute soil drainage is vital; do not allow the roots to sit in stagnant winter water. Allow some late-season flowers to drop seeds naturally to ensure generational longevity.

Mulching: Use a thin layer of grit or light mulch around the base; avoid piling wet, heavy organic barks directly against the crown.

Winter Protection: None required; completely frost-hardy. Simply clear away dead foliage and old stems in late autumn or early spring to clear a path for fresh green shoots.

Fruit Profile