Two Geraniums


wild, wood, or spotted
geranium; cranesbill—>
Geranium maculatum


Carolina cranesbill
Geranium carolinianum var. carolinianum
Geraniaceae [below]

These are the only two native geraniums easily found in the Maryland piedmont. There’s a third species (G. bicknellii) that might be present, and a fourth (G. robertianum) that is listed S1, so spotting it is unlikely. There are also half a dozen or so alien geraniums present in the state.


Carolina cranesbill is found in all US states except Colorado, and most of Canada except the far north and the maritime provinces. It is listed as weedy by some authorities. It grows best in poor soils, which may explain why I first found it growing from cracks in the concrete curb in the Carderock parking lot.  [right] The other place I’ve spotted it is on the rocky promontories that jut into the Potomac downstream of Carderock.


Wild geranium is found in the the eastern US, most of the south and midwest, and somewhat into the great plains states. It prefers moister, richer soils than Carolina cranesbill; watch for it in open woodlands in the piedmont. Wild geranium is lovely in the home garden, and so far in my garden it’s been rabbit-resistant. There are native plant sellers around who carry it. The one I planted last spring has about tripled in size and is blooming profusely.

Carderock Area, April 25


bastard toadflax
Comandra umbellata


The season is progressing rapidly: many of the ephemerals are gone already. When I visited the greater Carderock area on April 25, a few new species were in flower, all about a week and a half to two weeks earlier than last year.

Still blooming:
azure bluets (full bloom)
field chickweed
star chickweed (starting to wane)
sweet cicely (just starting)
wild ginger
wild blue phlox (waning)
wild pink (a little past full)
plantain-leaved pussytoes (almost done)
golden ragwort (almost done)
lyre-leaved rockcress (almost done)
early saxifrage (almost done)
spring beauty (waning)
toadshade (including yellow form)
common blue violet
creamy violet
smooth yellow violet



wild geranium
Geranium maculatum




Newly blooming:
cinquefoil, dwarf (just starting)
Carolina cranesbill
hooked crowfoot
spring forget-me-not
fringetree (just starting)
wild geranium (just starting)
Coville’s phacelia (looking a little past its peak)
rattlesnake weed
Rubus species
spiderwort (just starting)
wild stonecrop (just starting)
bastard toadflax
long-tube valerian (just starting)
violet wood sorrel

20160425-_DSC0179Oxalis violacea, Oxalidaceae