Botanical Name: Coreopsis verticillata ‘Permathread™ Red Satin’

Common Name: Tickseed

Hardiness Zone: Perennial in Most Climates (USDA Zones 4–9)

Size: 16–20" Tall × 18–24" Wide

Growth Habit: Mounded, Clump-Forming Habit

Sunlight: Full Sun (Best Flowering)

Soil: Prefers Well-Drained Soil; Tolerates Sandy or Poor Soils

Water Needs: Low to Moderate; Excellent Drought Tolerance Once Established

Bloom Season: Late Spring through Early Fall (Extremely Long Bloom Period)

Fertilizer: Minimal; Excess Fertility Reduces Blooming

Features: Deep Red Flowers with Golden Centers, Fine Threadleaf Foliage, Heat & Humidity Tolerant, Deer Resistant, Pollinator Friendly

Uses: Ideal for Perennial Borders, Mass Plantings, Pollinator Gardens, Containers, and Low-Maintenance Landscapes

Patent: ✔ Patented

Propagation: ❌ Propagation Prohibited

See our complete Coreopsis Plant Guide for more in depth care details.

More About Coreopsis ‘Permathread™ Red Satin’

Coreopsis ‘Permathread™ Red Satin’ feels like a new generation of threadleaf coreopsis, and you can see the difference the moment it starts blooming. This is not the washed out brick red that older varieties sometimes drift into by mid Summer. The blooms are a rich, velvety red with bright golden centers that almost glow in the sunlight. When planted in groups, the color reads deep and saturated, almost like a red fabric laid across the bed. It brings a boldness that traditional yellows simply cannot match.

Blooming begins in late Spring and just keeps going. I have watched it move from one flush into the next without any major pause, even when we did not stay on top of deadheading. The flowers are produced in such abundance that the plant often looks completely covered in color. The fine, threadlike foliage forms a dense, well shaped mound underneath, giving it that soft texture that balances the strong bloom color. It never looks coarse or unruly, even when temperatures climb.

Why We Like It (Our Trials)

In our trials, ‘Permathread™ Red Satin’ has shown a kind of consistency that makes planning easier. It does not surge early and disappear by midsummer. It builds steadily, fills in evenly, and keeps a uniform shape that makes a bed look intentional instead of patchy. Even after weeks of continuous bloom, the plant keeps its density. The base never opens up, and you do not get that tired, woody look that some older varieties develop. From a design standpoint, that reliability matters just as much as flower color. Another thing I have noticed is how well it anchors surrounding plants. The deep red tone gives weight to lighter yellows and silvers nearby, almost acting like a visual foundation. 

It also transitions beautifully from late Spring into the height of Summer without looking like it needs rescuing. No staking. No reshaping. No midseason collapse. Maintenance wise, it is refreshingly straightforward. A light trim if you want to tidy it up, and that is about it. It does not ask for heavy feeding, and it does not punish you if rainfall is inconsistent. Pollinators seem to find it quickly and return to it repeatedly, yet deer rarely give it attention. For gardeners who want dependable structure and sustained color without micromanaging every detail, ‘Red Satin’ brings both strength and polish to the garden year after year.

Permathread™ Red Satin vs. Other Coreopsis Varieties

Red Satin stands apart from Permathread™ Shades of Rose with a more decisive, high-contrast look, featuring deeper red tones that read bold and sharp in modern designs. Shades of Rose leans softer and more blended, offering a romantic wash of color, while Red Satin delivers crisp drama and visual punch. Compared to Moonbeam Coreopsis, Red Satin functions as an entirely different design tool—Moonbeam is airy, pale, and subtle, while Red Satin acts as color punctuation, creating immediate contrast against silvers, blues, chartreuse, and white.

When placed alongside Early Sunrise, Red Satin moves away from the classic golden daisy aesthetic in favor of a contemporary palette that feels curated and intentional. Early Sunrise is cheerful and traditional, whereas Red Satin reads refined and dramatic. Set next to Double the Sun, Red Satin focuses less on oversized or ruffled bloom form and more on season-long color presence and a sleek, polished habit; Double the Sun wins on showiness, but Red Satin excels when the goal is a planting that looks stylish from spring through fall. Gardeners looking for a modern, high-contrast coreopsis with rich red color should choose Permathread™ Red Satin.