Ornamental · Geraniaceae
Wild Geranium
Geranium maculatum
Give it dappled shade and moist woodland soil and this forgiving native will carpet your spring garden in soft pink.
Partial shade
Every 5–10 days
USDA 3–8
8–24 in · 20–61 cm
Overview
Wild geranium is a clump-forming native perennial from the woodlands of the east, and it is the true Geranium that gardeners also fondly call cranesbill, after the long, beak-shaped seed pods it forms once the flowers fade. Through mid to late spring it lifts loose sprays of pink to lavender blooms over deeply cut, lobed leaves. It sits in the genus Geranium, which is a nice thing to keep straight from the scented Pelargonium sold as a houseplant.
If you are just starting out, this is a reassuring plant to grow, because it is easy and low-maintenance and asks for very little once it has settled in. It is happiest in part shade and rich, humus-filled soil, much like the forest floor it came from, and it drifts slowly outward by rhizome into a tidy, ground-covering clump. Better yet, the flowers welcome in bees and flies, so it earns its place in any native or pollinator planting.
It is hardy across a generous range, coming through winters from zones 3 to 8, and it brushes off most pests and diseases without any fuss. The one thing it would rather avoid is hot, dry soil in the depths of summer, which can leave the leaves yellow and tired, but that is easy to prevent. Keep it cool and moist and it stays lovely from spring all the way into fall.
Care
The short version: give it part shade and rich, moist, humus-rich soil, keep it evenly watered through the summer heat, feed it only lightly if the soil is already good, and lift and divide a crowded clump every few years.
Light
Wild geranium is happiest in partial shade, the soft dappled light you find at a woodland edge. It will take full sun where the soil stays reliably moist, and it copes with full shade too, but harsh sun over dry ground is the one thing that scorches the leaves.
Water
Aim to keep the soil evenly moist, roughly every 5 to 10 days, and try not to let it bake dry. Once established, plants shrug off the occasional dry spell, but the foliage yellows quickly in a hot, dry summer if the roots go thirsty.
Soil
It loves rich, humus-rich, well-drained soil, the loose woodland kind full of leaf mold, though it happily adapts to clay or sand. A slightly acidic to neutral range of pH 5.5 to 7.0 suits it perfectly.
Temperature
This is a wonderfully cold-hardy plant, at ease across -40°F to 95°F (-40°C to 35°C) and winter-hardy through USDA zones 3 to 8. It is not really the summer heat that bothers it, but the dry soil that so often comes along with it.
Humidity
Everyday outdoor humidity suits it just fine, so there is no level for you to fuss over. What counts for much more is good airflow through the clump, since still, damp air is what invites rust and leaf spot.
Feeding
Rich woodland soil tends to feed this plant all on its own, so a light hand is best. A spring topdressing of compost or a balanced fertilizer is truly all it ever wants, and even that is optional in good ground.
Pruning
There is next to nothing to do here, which is part of its charm. Deadhead the spent flowers or shear tired foliage back after bloom to bring on a fresh flush of leaves, and otherwise you can simply let it be.
Repotting
Grown in the ground, it only needs dividing when a clump grows congested, about every 3 to 4 years. A crowded, declining center, weaker flowering, or yellow summer leaves are its gentle signs that it is time to lift and split.
Size & spacing
Mature plants reach around 8 to 24 inches (20 to 61 cm) tall with a similar 12 to 24 inch (30 to 61 cm) spread. Give each clump that much elbow room and it will fill in beautifully without crowding its neighbors.
When to plant
Wild geranium keeps to the woodland calendar, and it helps to follow its lead. The seed needs a cold spell to wake up, so sow it in late winter after 2 to 3 months of cold stratification, settle young plants outdoors in spring once the last frost has passed or in fall, and look forward to flowers from April through June.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Late winter after 2 to 3 months cold stratification
- Plant: Spring after last frost, or fall
- Harvest: April to June (mid to late spring)
Hardiness
USDA hardiness zones: 3–8
Temperature: down to -40°C
Troubleshooting
Wild geranium is a forgiving plant that seldom lands in real trouble, and most of what you might notice is only cosmetic. The usual suspects are damp-loving fungi, hungry slugs, and summer heat. Find the closest match below and step in early, while a small fix still goes a long way.
Orange-brown pustules or dark spots showing up on the leaves
Try not to worry if you spot these; it is almost always rust or a leaf spot fungus, and it settles in when leaves stay wet and air sits still around a crowded clump. Gently pick off the marked leaves and throw them in the bin, then start watering low at the base rather than over the top. A quick tidy of fallen debris in autumn stops the spores from lingering into next year.
Fix:
- Remove and destroy affected leaves
- Improve air circulation and avoid overhead watering
- Clean up fallen debris at season end
Ragged holes in the leaves with silvery slime trails
The likely visitors are slugs and snails, which come out to feed once it is dark or after rain and leave those telltale shiny trails behind. Head out at dusk with a flashlight and pick them off by hand, or tuck some iron-phosphate bait nearby to help. It also makes a real difference to clear away boards, mulch piles, and damp corners so they lose their daytime hiding spots.
Fix:
- Handpick snails and slugs in the evening
- Set out traps or iron-phosphate bait
- Remove damp hiding spots such as debris and boards
Foliage turning yellow and looking tired by midsummer
This is the one thing wild geranium struggles with, and the good news is it is completely fixable. Dry soil in the summer heat is what leaves the foliage yellow and worn out. Water deeply through hot dry stretches and spread some organic mulch to hold that moisture at the roots. If a clump already looks past its best, shear it back hard and it will happily push out a fresh set of leaves.
Fix:
- Water deeply during hot dry periods
- Apply organic mulch to conserve moisture
- Shear back declining foliage to flush fresh growth
Toxicity
Here is the reassuring part for pet owners: true wild geranium, Geranium maculatum, is not toxic and is considered safe around cats, dogs, livestock, and people. The mix-up comes down to the name. The scented houseplant geranium, Pelargonium, is a different genus and is the one that is genuinely poisonous to pets.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
You can relax about the cat here; a curious brush past or nibble of wild geranium does no harm, because Geranium maculatum carries no reported toxins. The one to keep an eye on is the scented Pelargonium, a different genus and the plant ASPCA actually flags.
Dogs None
There are no reports of poisoning in dogs from true wild geranium, so a hopeful chew on a leaf is nothing to lose sleep over. Just be sure not to confuse it with the toxic Pelargonium sold as a houseplant.
Horses None
Horses can graze happily around a woodland patch of wild geranium, since this species has no toxic compounds on record.
Rabbits None
Rabbits, whether wild visitors or family pets, can nibble the foliage without coming to any harm.
Livestock None
Cattle, goats, and sheep have nothing to fear from this native geranium out in the pasture or the garden.
Birds None
Birds are perfectly safe around the plant, and better still, pollinators like bees and flies lean on its spring flowers.
People None
There is no poisoning risk to people at all; a simple hand wash after handling any garden plant is all you need.
No special handling required; wash hands after gardening as a general precaution.
Varieties
Most gardens grow the plain species, and it is lovely as is, but a few selected forms show up now and then for their darker leaves or different flower colors. These are the ones worth getting to know.
Espresso
Its striking chocolate-brown to reddish-brown leaves make a lovely backdrop for the pale pink to lavender flowers.
Elizabeth Ann
This one brings together warm bronze-tinted foliage and soft, cool blue-lavender blooms.
Album
A gentle white-flowered version of the species, recorded botanically as f. albiflorum.
Companions
Plant near
Ferns: Share the same part-shade, moist woodland conditions and contrast in foliage texture.
Woodland phlox (Phlox divaricata): Blooms at the same spring time in similar shade gardens for a layered native display.
Wild columbine (Aquilegia canadensis): Native spring woodland companion that suits the same shade and soil and supports pollinators.
How to propagate
Wild geranium quietly spreads on its own by rhizome, and you can lend a hand by dividing an established clump or by sowing the seed it scatters, whichever feels more comfortable to try.
DivisionEasy
Fall or early spring · One growing season
The simplest way to grow more is one most beginners get right on the first try: lift a clump in fall or early spring and ease the rhizomes apart, since they often form neat right angles that separate cleanly. Pop the divisions back in and they usually settle happily within a single growing season.
SeedModerate
Sow fresh in fall outdoors, or stratify cold 2 to 3 months and sow in spring · One to two growing seasons
Seed asks for a bit more patience, but it is well worth trying. Gather it as the capsules darken, and slip a little bag over the ripening heads first, because those capsules fling their seed the instant they are ready. Sow fresh outdoors in fall, or give the seed 2 to 3 months of cold stratification and sow in spring, then allow one to two seasons for the young plants to find their feet.
Myths
Every plant called a geranium is poisonous to cats and dogs.
The one that causes trouble is the scented houseplant geranium, Pelargonium, which ASPCA lists as toxic to cats and dogs because of geraniol and linalool, bringing on vomiting, poor appetite, low mood, and skin irritation. True wild geranium, Geranium maculatum, belongs to a different genus and is not listed as toxic in the slightest. It is the shared common name that leads people astray.