Ornamental · Papaveraceae
Bleeding Heart
Lamprocapnos spectabilis
Give it shade, steady moisture, and rich soil, and bleeding heart hangs its little pink hearts out every spring.
Partial shade
Every 3–7 days
USDA 3–9
2–3 ft · 0.6–0.9 m
Overview
Bleeding heart is your go-to spring shade plant, and it gets that name from the row of plump, heart-shaped flowers that dangle off each arching stem, each one finished with a tiny white drop at the bottom. It's part of the poppy family and originally comes from the woodlands of eastern Asia, where it grows in that cool, dappled light under bigger trees. So it makes sense that it brings the same soft, woodsy feel to a shady corner of your yard.
What you've got here is a hardy perennial that comes back on its own year after year, and it shrugs off winters all the way down to USDA zone 3. The flowers show up in spring, often before the leaves have even finished opening, and the display runs right through April and May. Then around midsummer it pulls a move that throws a lot of new gardeners for a loop.
As the heat ramps up, the leaves go yellow and die back, and the plant settles into summer dormancy until spring rolls around again. Don't panic, because the roots are alive and well underground the whole time. Plan for that gap by tucking in some later-rising neighbors, and what you get is a plant that barely asks anything of you once it's settled in.
Care
The short version: pop it into partial to full shade in rich, humus-filled soil, keep that soil evenly moist through spring and summer, and just don't let it sit in soggy ground over winter.
Light
Bleeding heart loves partial to full shade, basically the cool, dappled light it'd get under trees out in the wild. A little morning sun won't hurt, but hot afternoon sun scorches the leaves and pushes the plant into dormancy way too early.
Water
Keep the soil evenly moist through spring and summer, since this one just can't handle a summer drought. Steady moisture keeps the leaves around longer too, before they fade. Just don't let it sit in soggy, waterlogged ground, especially over winter, or you'll end up with rotted roots.
Soil
Give it moist, well-drained soil rich in humus, that loose, leafy kind of ground you'd find on a woodland floor. It's not picky about acidity at all and grows just fine anywhere from pH 6.0 to 8.0, so work in plenty of compost and you're good to go.
Humidity
Regular garden air is plenty, so there's no humidity number to chase here. What this plant actually cares about is moisture in the soil, not how damp the air is.
Feeding
It's a light feeder, so it does great with compost or organic matter mixed in each spring, or a balanced fertilizer through the growing season. Honestly, rich, humus-filled soil usually covers everything without any extra help.
Pruning
There's no real shaping to bother with here. Just snip off the spent flower stems to keep it tidy, then cut back the yellowing leaves as they die down in midsummer. Leave the roots where they are and growth comes right back next spring.
Size & spacing
A grown clump gets to about 2 to 3 feet (61 to 91 cm) tall and spreads 18 to 30 inches (46 to 76 cm) wide. Give each plant that much elbow room, and keep in mind the gap it leaves once it goes dormant in summer.
When to plant
Bleeding heart runs on a spring schedule, so it's easy to follow. Set out dormant roots or divisions in spring or fall, watch for flowers in April and May, and don't be surprised when the leaves fade by midsummer as it slips into dormancy for the year.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Seed is slow and difficult; division is preferred over indoor sowing.
- Plant: Plant dormant roots or divisions in spring or fall in a shaded, woodland-type site.
- Harvest: Blooms in spring, typically April to May, often before leaves fully emerge.
Hardiness
USDA hardiness zones: 3–9
Temperature: down to -40°C
Troubleshooting
Bleeding heart is an easygoing plant with only a couple of quirks, and honestly most of them aren't even problems. The big one, that summer dieback, is totally normal and nothing you need to fix. Just match what you're seeing below before you grab the trowel.
Plant rotting, flopping, or not coming back
If the roots feel soft and mushy, the problem is almost always wet feet, which just means soggy ground that won't drain, and a wet winter is the real troublemaker. The fix is pretty simple: mix in lots of organic matter to loosen things up, then move the plant somewhere water never pools around it. Remember, bleeding heart loves steady moisture while it's growing, but it wants that water to drain away once the season's done.
Fix:
- Improve drainage by amending with organic matter
- Relocate to a well-drained site
Leaves going yellow and dying back in midsummer
Worried it's a goner? It isn't, because this is just summer dormancy. Once the blooms finish and the weather turns hot and dry, the plant heads underground for a rest, and it'll do that right on cue every single year. Keep the soil moist if you'd like the leaves to hang around a bit longer, slide a hosta or fern in beside it to cover the bare patch, and don't touch the roots, because they'll send everything back up next spring.
Fix:
- Keep soil moist to prolong foliage
- Interplant with hostas or ferns to fill the gap
- Leave roots undisturbed; growth resumes the following spring
Sticky, twisted new shoots with little bugs on the stems
See those tiny soft bugs huddled on the new spring shoots? Those are aphids, and that sticky stuff they leave behind is honeydew. A good hard blast of water sends most of them packing, and if a few keep showing up, insecticidal soap takes care of the rest. And here's a tip: going easy on the nitrogen helps too, since it stops the soft new growth they're so fond of from coming on too fast.
Fix:
- Spray off with a strong stream of water
- Apply insecticidal soap if needed
Toxicity
This is one to keep away from mouths. Every part of it holds isoquinoline alkaloids, with the most packed into the roots and leaves, and it's listed as toxic to cats, dogs, and horses, plus it's a known poison for grazing livestock. People shouldn't eat it either, and even handling the leaves can bug sensitive skin, so wear gloves and keep kids and animals from chewing it.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Mild
If a cat nibbles a leaf, expect some drooling and a bit of vomiting, with diarrhea not far behind. A bigger mouthful can push things further, all the way to tremors and even convulsions.
Dogs Mild
A dog that chews the foliage usually ends up drooling, throwing up, and dealing with loose stools. Eat enough of it, though, and the alkaloids can bring on shaking and seizures, so a big helping is worth a vet call.
Horses Moderate
Horses feel this more than the little pets do. A bit of grazing brings drooling, a queasy gut, and diarrhea, and a heavier mouthful can tip into trembling and convulsions.
Rabbits Toxic
Rabbits usually walk right past bleeding heart, but the leaves and roots carry the very same alkaloids, so it's safest to treat it as a no-go and keep it where they can't reach.
Livestock Toxic
This one's a known poison for grazers like cattle, sheep, and goats. Any that munch through a fair amount can start staggering and convulsing, so keep it well away from the pasture.
Birds Toxic
The same alkaloids that bother mammals make the leaves and roots a bad idea for birds too. Keep your poultry and pet birds from pecking at any part of it.
People Caution
None of bleeding heart is food, and eating much of it can leave a person feeling sick thanks to those isoquinoline alkaloids. Even handling the leaves can irritate sensitive skin, so pull on gloves and keep curious kids from popping it in their mouths.
Contact with the foliage can cause skin irritation in sensitive people; wear gloves when handling.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
The plain species is what most gardeners grow, and it's a great pick, but a few named selections give you a different color or a little more heat tolerance. Here are the ones worth knowing about.
Alba
A crisp white version that copes with summer heat a little better than the regular species.
Gold Heart
It's all about the golden-yellow leaves here, which make those rose-pink flowers really pop.
Valentine
This one shows off red-and-white flowers on dark red stems for a deeper, moodier look.
How to propagate
Bleeding heart is grown from division instead of seed, because seed is slow and kind of a pain. Splitting up an established clump hands you ready-made plants that flower way sooner.
DivisionModerate
Divide the clump in spring or fall while dormant or just emerging. · Reaches mature size within about 2 to 3 seasons.
Want more plants? Splitting an established clump is the way to go, and it's best done in spring or fall while the clump's dormant or just poking up. The roots are fleshy and snap pretty easily, so lift and split them gently, then get them straight back into moist, shaded, humus-rich soil. Just be patient, because each new division needs 2 to 3 seasons to settle in and reach full size.
Myths
Bleeding heart is fine around pets since it's just an ornamental flower.
Not quite, because every part of it carries isoquinoline alkaloids, and the ASPCA lists it as toxic to cats, dogs, and horses. Chew on it and you get drooling, vomiting, and diarrhea, and a big dose can lead to tremors and convulsions. Pretty doesn't mean safe, so keep pets and livestock from grazing it.
The plant's a goner once its leaves yellow and disappear in summer.
Don't write it off, because that dieback is totally normal for this plant, not the end of it. The roots keep right on living underground through the dormant spell, and the whole thing pops back up the following spring like nothing happened.