Quick answer: 43 native Maryland plants have a recorded bloom range that includes July.
43 species
- American basswood Tilia americana · 32 states
- Black-eyed Susan Rudbeckia hirta · 42 states
- Blue mistflower Conoclinium coelestinum · 26 states
- Bristly locust Robinia hispida · 9 states
- Butterflyweed Asclepias tuberosa · 37 states
- Cardinal flower Lobelia cardinalis · 37 states
- Chokecherry Prunus virginiana · 35 states
- Common buttonbush Cephalanthus occidentalis · 23 states
- Common hoptree Ptelea trifoliata · 12 states
- Common yarrow Achillea millefolium · 31 states
- Coralberry Symphoricarpos orbiculatus · 20 states
- Crimson-eyed rose-mallow Hibiscus moscheutos · 14 states
- Dense blazing star Liatris spicata · 15 states
- Devil's walking stick Aralia spinosa · 14 states
- Eastern purple coneflower Echinacea purpurea · 22 states
- Eastern red columbine Aquilegia canadensis · 36 states
- Eastern smooth beardtongue Penstemon laevigatus · 7 states
- Foxglove beardtongue Penstemon digitalis · 31 states
- Great blue lobelia Lobelia siphilitica · 32 states
- Great laurel Rhododendron maximum · 13 states
- Hollow Joe-pye weed Eutrochium fistulosum · 14 states
- Indian blanket Gaillardia pulchella · 18 states
- Lemon beebalm Monarda citriodora · 15 states
- Maypop passionflower Passiflora incarnata · 13 states
- Mountain laurel Kalmia latifolia · 17 states
- Narrowleaf evening-primrose Oenothera fruticosa · 10 states
- New Jersey tea Ceanothus americanus · 31 states
- Pale purple coneflower Echinacea pallida · 9 states
- Scarlet beebalm Monarda didyma · 18 states
- Seaside alder Alnus maritima · 2 states
- Smooth hydrangea Hydrangea arborescens · 12 states
- Smooth sumac Rhus glabra · 34 states
- Sourwood Oxydendrum arboreum · 14 states
- Southern arrowwood Viburnum dentatum · 13 states
- Spotted beebalm Monarda punctata · 14 states
- Staghorn sumac Rhus typhina · 13 states
- Sundial lupine Lupinus perennis · 25 states
- Swamp azalea Rhododendron viscosum · 7 states
- Swamp milkweed Asclepias incarnata · 25 states
- Sweet-fern Comptonia peregrina · 10 states
- Sweetbay magnolia Magnolia virginiana · 12 states
- Trumpet vine Campsis radicans · 24 states
- Winged sumac Rhus copallinum · 11 states