Ornamental · Asteraceae
Purple Coneflower
Echinacea purpurea
Drop it into full sun and lean, well-drained soil and watch coneflower bloom from early summer straight into fall.
Full sun
Every 7–14 days
USDA 3–8
2–4 ft · 0.6–1.2 m
Overview
Purple coneflower is a tough, sun-loving perennial in the daisy family, springing from the prairies and open woods of eastern North America. It shoots up sturdy stems crowned with rosy-purple petals that ring a raised, bristly cone, and it comes roaring back bigger every year. Hardy through USDA zones 3 to 8, it powers through cold winters and hot, dry summers without missing a beat.
Hardly any flower earns its spot like this one. The blooms keep coming from early summer well into fall, pulling in bees and butterflies all season long, and leave the spent cones standing and finches feast on them through winter. It also carries a long history as the herb echinacea, taken as a supplement for generations.
Easy growing has never felt so rewarding. Coneflower wants nothing more than full sun and soil that drains, then it takes off on its own, shrugging off drought and rough ground that would flatten pickier perennials. Give it room to breathe and it pays you back with years of bloom for almost no effort.
Care
The short version: give it full sun and lean, well-drained soil, then water just every week or two once it takes off. It powers through clay, sand, and drought, barely wants feeding, and bounces back stronger every single year.
Light
Coneflower craves full sun, six hours or more of direct light a day, to bloom big and stand tall and sturdy. It will take partial shade in a pinch, but pile on too much shade and it stretches, flops, and flowers far less, so chase the sun.
Water
Once it digs in, coneflower turns drought tolerant and asks for water only every 7 to 14 days, happiest at dry to medium moisture. Aim the water at the base instead of overhead, since soggy leaves throw the door wide open to disease.
Soil
It takes off in average, well-drained loam and adapts like a champ to clay, sand, and rocky ground. A wide pH of 6.0 to 8.0 keeps it humming, and the one thing it flat-out refuses is soil that stays soggy.
Humidity
Plain outdoor air does the whole job, so forget chasing any humidity number. Airflow is the real win, because crowded, damp foliage is exactly where powdery mildew gets rolling.
Feeding
Coneflower runs on low feeding needs and thrives in lean soil. One light slow-release feed such as 12-6-6 in early spring is all it takes, and going heavier just pumps out floppy stems instead of flowers.
Pruning
Deadhead the spent blooms to sharpen the look and stretch the flowering, though it reblooms on its own no matter what. Leave a few seed heads standing into winter to feed the birds and let it self-sow, then cut the stems back in late fall or leave them as winter shelter for native bees.
Size & spacing
In full bloom the plants shoot up to 2 to 4 feet (60 to 120 cm) tall. Give each one 12 to 24 inches (30 to 60 cm) of room so air rips through and mildew never gets a foothold.
When to plant
Coneflower keeps the rhythm of a northern season, and timing it is half the fun. Get seed going indoors in late winter, move the young plants out after the last spring frost, and the flowers come on strong from early summer right into fall.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Sow indoors at 65 to 70°F about 8 to 10 weeks before last frost; germinates in 10 to 20 days.
- Plant: Transplant outdoors after the last spring frost.
- Harvest: Blooms early summer through mid-fall, peaking June through August.
Hardiness
USDA hardiness zones: 3–8
Temperature: down to -40°C
Troubleshooting
Coneflower trouble almost always shows up on the flowers or the leaves, and a healthy, thriving stand barely sees any of it. Get to know the early signs below and you can jump on a problem before it travels through the bed.
Petals turning green with leafy tufts on the cone
That is aster yellows, a phytoplasma that leafhoppers ferry from plant to plant. It runs through the whole plant and never clears, so once a coneflower throws greened petals and witches-broom tufts, it is past saving. Pull it fast, bag it for the trash and not the compost, and stay on top of leafhoppers and weedy hosts nearby.
Fix:
- Promptly dig up and remove infected plants
- Bag and discard them in the trash, not compost
- Control leafhoppers and weedy hosts nearby
Foliage chewed to lace in midsummer
Bet on Japanese beetles, swarming onto leaves and blooms and chewing them right down to the veins. Knock them into a pail of soapy water first thing in the morning while they are still sluggish, and hit lighter outbreaks with insecticidal soap. Scout early in summer and you can beat the numbers back before they explode.
Fix:
- Hand-pick beetles into soapy water in early morning
- Treat with insecticidal soap for light infestations
Distorted, tufted blooms with a rosetted cone
Twisted, rosetted flower heads usually mean eriophyid mites feeding hidden inside the developing buds. They are way too tiny to spot, so those warped blooms are your tip-off. Snip off and toss the affected heads in fall to clear the mites out before they overwinter.
Fix:
- Cut back and remove affected flower heads in fall
White powdery film coating the leaves
A dusty white-to-gray coating on the upper leaves in humid weather spells powdery mildew, and it grabs hold fastest where plants crowd in too tight. Open up the spacing so air moves freely, and keep the foliage dry by watering at the base. It looks rough, sure, but it rarely does any lasting damage.
Fix:
- Improve spacing and air circulation
- Avoid overhead watering
Toxicity
Here is great news for an animal-friendly garden: purple coneflower is non-toxic across the board. It never lands on the ASPCA toxic plant list, it stays safe around cats, dogs, horses, and livestock, and people have taken it as the herb echinacea for generations. Plant it freely wherever your animals roam and enjoy the peace of mind.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Purple coneflower never makes the ASPCA toxic list, so a curious cat that nibbles a leaf has nothing to fear from it.
Dogs None
Dogs can sniff, chew, and dig around the plant all day with no risk of poisoning.
Horses Safe
Horses grazing near a stand of coneflowers face zero toxic threat from the foliage or the flowers.
Rabbits Safe
The leaves and stems are harmless to rabbits, though they might just munch the plant down to the ground.
Livestock Safe
Cattle, goats, and sheep can browse coneflower with no ill effect, since it carries no known toxin.
Birds Safe
Birds love it here, and finches especially swoop in on the dried seed heads through fall and winter.
People Safe
People have leaned on echinacea as an herbal supplement for generations, and the plant rates as non-toxic.
Varieties
There is a whole world of named coneflowers to dig into, from the classic purples to dazzling modern color mixes. The few below are the ones you will run into most, and every one is worth growing.
Magnus
Magnus grabs attention with its big flowers, riding on flat, horizontal rosy-purple petals that hold flat instead of drooping like so many coneflowers.
White Swan
White Swan swaps the usual purple for crisp white petals wrapped around a warm coppery-orange cone.
Cheyenne Spirit
Cheyenne Spirit is a seed-grown mix that fires off flowers in red, orange, yellow, purple, and cream from one single packet.
How to propagate
Want a whole drift of these? Coneflower makes it easy. Split an established clump or start from seed, and the plant happily sows itself to fill in the gaps.
DivisionModerate
Divide clumps in spring or fall, roughly every 3 to 4 years when they become overcrowded. · One growing season to re-establish.
Dig up a crowded clump in spring or fall, every 3 to 4 years or so, and break it into pieces that each hang onto roots and shoots. Slot the divisions back in right away and they bounce back over a single growing season.
SeedEasy
Sow indoors 8 to 10 weeks before last frost or allow self-seeding in the garden. · Germinates in 10 to 20 days; typically blooms the second year from seed.
Fire up seed indoors 8 to 10 weeks before the last frost, or just let the plant scatter its own seed across the bed. Sprouts pop in 10 to 20 days, though the plants usually hold off for their second year to flower. Leave the seed heads standing and coneflower reseeds itself with zero help from you.
Myths
Coneflowers will not rebloom unless you deadhead them.
Toss that idea out, because plants charge right back into bloom whether or not you snip the old flowers. Deadheading mostly just sharpens the look, while leaving some seed heads feeds the birds and lets the plant sow itself for next year.
Echinacea is toxic and dangerous to pets.
Not a chance, since purple coneflower never lands on the ASPCA toxic plant list and counts as non-toxic all around. It even boasts a long track record as an herbal supplement for people.