Ornamental · Geraniaceae
Wild Geranium
Geranium maculatum
Give it dappled shade and moist woodland soil and this native lays a soft pink carpet across the spring garden.
Partial shade
Every 5–10 days
USDA 3–8
8–24 in · 20–61 cm
Overview
Wild geranium is a clump-forming native perennial of eastern woodlands, and up close its deeply cut, lobed leaves fan out in a low mound of rich green. It is a true Geranium, called cranesbill for the long, beak-shaped seed pods that stand up after the flowers pass. From mid to late spring it opens loose sprays of pink to lavender bloom on slender stems above that foliage. It belongs to the genus Geranium, a different plant from the scented Pelargonium sold as a houseplant.
This is an easy, low-maintenance plant that asks little once it settles in. It roots into part shade and rich, humus-filled soil like the forest floor it comes from, then travels slowly by rhizome into a tidy, ground-covering clump. Its five-petaled flowers open flat and pale, and their nectar and pollen draw in bees and flies at close range.
It is hardy from zones 3 to 8 and shrugs off most pests and diseases. The one thing it will not take is hot, dry soil in midsummer, which drains the color from the leaves and leaves them yellow and slack. Kept cool and moist, the foliage holds its deep green and firm shape from spring straight through fall.
Care
The short version: part shade and rich, moist, humus-rich soil, even watering through the summer heat, only light feeding where the soil is already good, and division of a crowded clump every few years.
Light
Wild geranium colors up best in partial shade, the dappled light of a woodland edge, where the lobed leaves hold a deep, even green. It takes full sun where the soil stays reliably moist and full shade at the other end, but harsh sun over dry ground scorches the leaf margins brown.
Water
Keep the soil evenly moist, roughly every 5 to 10 days, and never let it bake. Established plants ride out the odd dry spell, but the green drains to yellow fast in a hot, dry summer when the roots run short.
Soil
It sinks its roots into rich, humus-rich, well-drained soil, the loose woodland kind full of dark leaf mold, though it adapts to clay or sand. Aim for a slightly acidic to neutral range of pH 5.5 to 7.0.
Temperature
The plant is cold-hardy across -40°F to 95°F (-40°C to 35°C) and winter-hardy through USDA zones 3 to 8. It is the dry soil that rides in with summer heat, not the heat itself, that shows first in the leaves.
Humidity
Ordinary outdoor humidity suits it, so there is no level to manage. Good airflow through the mound of foliage counts far more, since stagnant, damp air settles on the leaves and invites rust and leaf spot.
Feeding
Rich woodland soil feeds this plant on its own, so go light. A spring topdressing of dark compost or a balanced fertilizer is all it ever needs, and even that is optional in good ground.
Pruning
There is almost nothing to cut. Snip off the spent flower stems or shear the tired foliage back after bloom to bring up a fresh flush of crisp green leaves, and otherwise leave the clump alone.
Repotting
Grown in the ground, it only wants dividing when the clump packs tight, every 3 to 4 years. A crowded, thinning center, fewer flowers, or yellowing summer leaves show it is time to lift and split the rhizomes.
Size & spacing
A mature clump stands about 8 to 24 inches (20 to 61 cm) tall and spreads a similar 12 to 24 inches (30 to 61 cm) wide. Give each that much room and the lobed foliage fills the gap without pressing on its neighbors.
When to plant
Wild geranium runs on the woodland calendar. The seed needs cold to break its rest, so sow it in late winter after 2 to 3 months of cold stratification, set young plants out in spring after the last frost or in fall, and watch the pink to lavender flowers open 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 rarely runs into serious trouble, and most of what marks the foliage is cosmetic. The usual causes are damp-loving fungi, hungry slugs, and summer heat. Match the look of the leaves below and step in early, while it still counts.
Raised rust-colored bumps and dark blotches across the leaf surface
Raised orange-brown pustules or defined dark lesions stippling the lobed leaves point to rust or a leaf spot fungus, both of which set in when the foliage stays wet and still air lingers in the clump. Pick off the marked leaves and bin them, then run water low at the base so the leaf surfaces dry. A season-end sweep of fallen debris clears the spores before they carry over.
Fix:
- Remove and destroy affected leaves
- Improve air circulation and avoid overhead watering
- Clean up fallen debris at season end
Leaf blades riddled with torn holes and a glinting silver sheen
Ragged holes torn through the leaf blades and a faint silver sheen across them mark the work of slugs and snails, which feed after dark and after rain. A dusk pass with a flashlight lifts them off by hand, and iron-phosphate bait set nearby thins them further. Pull away boards, mulch piles, and other cool damp cover, and the feeders lose the shade they hide in by day.
Fix:
- Handpick snails and slugs in the evening
- Set out traps or iron-phosphate bait
- Remove damp hiding spots such as debris and boards
Deep green leaves draining to a limp, washed-out yellow in high summer
When the deep green lobes fade to a tired yellow and go limp, the cause is dry soil under summer heat, which wild geranium will not stand. A deep soak through hot dry spells and a blanket of organic mulch hold moisture at the roots. Shear a spent clump right down and a fresh flush of crisp new leaves pushes up from the crown.
Fix:
- Water deeply during hot dry periods
- Apply organic mulch to conserve moisture
- Shear back declining foliage to flush fresh growth
Toxicity
Reassuring news for pet owners: true wild geranium, Geranium maculatum, is not toxic and is considered safe around cats, dogs, livestock, and people. The confusion comes from the name. The scented houseplant geranium, Pelargonium, is a different genus and the one that is genuinely poisonous to pets.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
A cat can bat at the lobed leaves or take a nibble with no ill effect, since Geranium maculatum carries no reported toxins. The plant that warrants caution is the scented Pelargonium, a separate genus and the one ASPCA actually flags.
Dogs None
No poisoning has been reported in dogs from true wild geranium, so a chew on the deeply cut foliage is nothing to worry about. Keep it separate in your mind from the toxic Pelargonium sold as a houseplant.
Horses None
Horses can crop the leaves of a woodland stand of wild geranium safely, with no toxic compounds on record for this species.
Rabbits None
Rabbits, wild or pet, can browse the tender lobed foliage without any harm.
Livestock None
Cattle, goats, and sheep face no listed risk from this native geranium, in pasture or garden.
Birds None
Birds are safe among the plants, and the pink to lavender spring flowers draw pollinators such as bees and flies.
People None
The plant poses no poisoning risk to people; a wash of the hands after handling any garden plant is enough.
No special handling required; wash hands after gardening as a general precaution.
Varieties
Most gardens grow the straight species, but a few selected forms turn up for their darker foliage or altered flower color. These are the ones worth a close look.
Espresso
Its leaves take on a deep chocolate-brown to reddish-brown cast that throws the pale pink to lavender flowers into sharp relief.
Elizabeth Ann
Its foliage carries a bronze tint beneath cool blue-lavender blooms.
Album
A pure white-flowered form of the species, listed 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 spreads on its own by rhizome, and you can lend a hand by dividing an established clump or by catching the seed it flings from its pods.
DivisionEasy
Fall or early spring · One growing season
Division is the simplest route to more plants. Lift a clump in fall or early spring and the thick rhizomes come into view, branching in tidy right angles that snap apart cleanly along the joints. Set the pieces back in the soil and they knit in over 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 takes more patience. The slender, beak-shaped capsules that give the plant its cranesbill name fling their seed the moment they ripen, so slip a bag over the darkening heads to catch it. Sow fresh outdoors in fall, or give the seed 2 to 3 months of cold stratification and sow in spring, and expect one to two seasons before the plants fill out.
Myths
Any plant bearing the geranium name is poisonous to household pets.
Only the fragrant Pelargonium, the potted windowsill geranium, deserves that reputation: ASPCA flags it for cats and dogs, naming geraniol and linalool as the culprits, with vomiting, a lost appetite, low mood, and irritated skin among the signs. Geranium maculatum, the true woodland cranesbill, belongs to another genus entirely and appears on no toxicity list. A common name shared by two very different plants is all the confusion amounts to.