Also known as Wild Golden Glow, this coneflower reaches towering heights of up to 9′ tall in the wild! When cultivated, it typically has a shorter habit of 3-5′. Bright yellow flowers have reflexed (drooping) petals with domed green centers. This cheery native wildflower favors damp soil and is often found along streams or woodland edges. However, it can tolerate hot and humid summers if provided enough moisture and is adaptable to various growing conditions.
Other Common Names: Green Headed Coneflower, Cut-Leaved Coneflower, Tall Coneflower
USDA Zones: 3 – 9
Life Cycle: Perennial
Height: 5.00′ – 9.00′
Spread: 2.00′ – 4.00′
Sun: Full Sun – Part Sun – Shade
Soil: Clay, Loam, Sand
Moisture: Medium – Wet
Bloom Time: July – October
Bloom Color: Yellow
Uses: Naturalize, Rain Garden, Back of the Border, Woodland Garden
Native Range: BONAP Map
- Spreads enthusiastically by underground rhizomes (especially in moist soil)
- Drought conditions may cause leaves to droop and wither away
- May need support from a fence or staking after heavy wind/rain
- Long bloom time
- Deer resistant
- Black Walnut juglone tolerant
- Able to withstand occasional spring floods
- Leaves can be confused with Giant Ragweed before flowering occurs. Easily tell the difference: R. laciniata leaves have a smooth surface and smooth stems. Giant Ragweed (Ambrosia trifida) has rough leaves and hairy stems.
- Host plant for : Silvery Checkerspot Butterfly, Wavy-Lined Emerald Moth, Common Pug Moth
- Nectar plant for: Long-tongued bees, Short-tongued bees, Predatory Wasps, Moths, Butterflies, Flies
- Seeds for over-wintering Goldfinches
- Provides ideal camouflage for Ambush Bugs
Relatively disease and pest free. Occasionally, Rudbeckia Gall Midges (Asphondylia rudbeckiaeconspicua) may create swollen areas (galls) at the base of flower blossoms which may be confused with Aster Yellows disease. However, the galls do not require intervention and will not be a detriment the overall health of the plant. Other insects that may feed destructively on it are Leaf Beetles (Sumitrosis inequalis) and Golden Glow Aphids (Uroleucon rudbeckiae).
PLEASE NOTE: Like all native plants, Cutleaf Coneflower is an important food source for many creatures. Some years they may be more affected by insects than others. However, these insects provide essential food for birds and other wildlife as part of a balanced, intricate food web. Instead of reaching for pesticides at the first sign of leaf damage, consider grabbing your magnifying glass or binoculars and observe what visitors are frequenting your amazing native plant!
A CLOSER LOOK
In order to provide the maximum benefit to pollinators, it is best to plan for a succession of blooms. This ensures that as one species fades, another begins to blossom. In this way, a constant source of nectar and pollen is provided from spring through fall. The following natives enjoy similar growing conditions to Rudbeckia laciniata:
- Jewelweed – Impatiens capensis
- Great Blue Lobelia – Lobelia siphilitica
- White Turtlehead – Chelone glabra
- Virgin’s Bower – Clematis virginiana
- Ironweed – Veronia spp.
- Fringed Loosestrife – Lysimachia ciliata
- Blue Flag Iris – Iris versicolor
- Asters – Symphyotrichum spp.
- Wingstem – Verbesina alternifolia
- Tall Meadow Rue – Thalictrum pubescens
- American Germander – Teucrium canadense
- Hollow Joe Pye Weed – Eutrochium fistulosum