60 wildflowers were recorded blooming in New Jersey in June in our iNaturalist sample; 31 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top wildflowers in June

Partridgeberry

Striped Wintergreen

Common Milkweed

Mountain Laurel

American black elderberry

Border Privet

Sheep Laurel
Japanese honeysuckle

Purple Crownvetch

black-eyed Susan

Bird's-Foot Trefoil

Common Yarrow
All wildflowers blooming in New Jersey in June
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Partridgeberry | Mitchella repens | madder family | 233 | Jun (peak) |
| 2 | Striped Wintergreen | Chimaphila maculata | heath family | 176 | Jun (peak) |
| 3 | Common Milkweed | Asclepias syriaca | Dogbane Family | 161 | Jun (peak) |
| 4 | Mountain Laurel | Kalmia latifolia | heath family | 156 | May (past peak) |
| 5 | American black elderberry | Sambucus canadensis | elder family | 150 | Jun (peak) |
| 6 | Border Privet | Ligustrum obtusifolium | olive family | 129 | Jun (peak) |
| 7 | Sheep Laurel | Kalmia angustifolia | heath family | 104 | May (past peak) |
| 8 | Japanese honeysuckle | Lonicera japonica | honeysuckle family | 104 | Jun (peak) |
| 9 | Purple Crownvetch | Securigera varia | Legumes | 100 | Jun (peak) |
| 10 | black-eyed Susan | Rudbeckia hirta | Sunflowers, Daisies, Asters, and Allies | 98 | Jul (rising) |
| 11 | Bird's-Foot Trefoil | Lotus corniculatus | Legumes | 96 | Jun (peak) |
| 12 | Common Yarrow | Achillea millefolium | Sunflowers, Daisies, Asters, and Allies | 96 | Jun (peak) |
| 13 | Rose Pogonia | Pogonia ophioglossoides | Orchids | 94 | Jun (peak) |
| 14 | Butterfly Milkweed | Asclepias tuberosa | Dogbane Family | 87 | Jul (rising) |
| 15 | Deptford pink | Dianthus armeria | pink family | 86 | Jun (peak) |
| 16 | Red Clover | Trifolium pratense | Legumes | 84 | Jun (peak) |
| 17 | clasping Venus's looking glass | Triodanis perfoliata | bellflower family | 78 | Jun (peak) |
| 18 | White Clover | Trifolium repens | Legumes | 73 | May (past peak) |
| 19 | Scarlet Pimpernel | Lysimachia arvensis | primrose family | 66 | Jun (peak) |
| 20 | Carolina horsenettle | Solanum carolinense | nightshade family | 60 | Jun (peak) |
| 21 | Ghost Pipe | Monotropa uniflora | heath family | 55 | Jul (rising) |
| 22 | American white waterlily | Nymphaea odorata | Waterlily Family | 54 | Aug (rising) |
| 23 | Yellow Sweetclover | Melilotus officinalis | Legumes | 54 | Jun (peak) |
| 24 | White Campion | Silene latifolia | pink family | 53 | May (past peak) |
| 25 | Bladder Campion | Silene vulgaris | pink family | 51 | Jun (peak) |
| 26 | Black Medick | Medicago lupulina | Legumes | 51 | May (past peak) |
| 27 | Purple Milkweed | Asclepias purpurascens | Dogbane Family | 49 | Jun (peak) |
| 28 | Orange Day-Lily | Hemerocallis fulva | Aloe family | 49 | Jun (peak) |
| 29 | Bittersweet Nightshade | Solanum dulcamara | nightshade family | 48 | Jun (peak) |
| 30 | Sulphur Cinquefoil | Potentilla recta | rose family | 48 | Jun (peak) |
| 31 | Philadelphia fleabane | Erigeron philadelphicus | Sunflowers, Daisies, Asters, and Allies | 48 | May (past peak) |
| 32 | Ribwort Plantain | Plantago lanceolata | Plantain Family | 45 | May (past peak) |
| 33 | Common St. John's Wort | Hypericum perforatum | St. John's wort family | 45 | Jul (rising) |
| 34 | Chicory | Cichorium intybus | Sunflowers, Daisies, Asters, and Allies | 44 | Jul (rising) |
| 35 | Oxeye Daisy | Leucanthemum vulgare | Sunflowers, Daisies, Asters, and Allies | 43 | Jun (peak) |
| 36 | Hemp Dogbane | Apocynum cannabinum | Dogbane Family | 43 | Jun (peak) |
| 37 | Goat's Rue | Tephrosia virginiana | Legumes | 43 | Jun (peak) |
| 38 | Foxglove Beardtongue | Penstemon digitalis | Plantain Family | 42 | Jun (peak) |
| 39 | Ground-Ivy | Glechoma hederacea | Mint Family | 41 | Apr (past peak) |
| 40 | Narrowleaf Cow Wheat | Melampyrum lineare | broomrape family | 40 | Jun (peak) |
| 41 | Multiflora Rose | Rosa multiflora | rose family | 40 | May (past peak) |
| 42 | Common Selfheal | Prunella vulgaris | Mint Family | 39 | Jul (rising) |
| 43 | Moth Mullein | Verbascum blattaria | figwort family | 39 | Jun (peak) |
| 44 | Creeping Thistle | Cirsium arvense | Sunflowers, Daisies, Asters, and Allies | 39 | Jun (peak) |
| 45 | Asiatic dayflower | Commelina communis | Spiderworts | 37 | Sep (rising) |
| 46 | Common Motherwort | Leonurus cardiaca | Mint Family | 35 | Jun (peak) |
| 47 | White Sweetclover | Melilotus albus | Legumes | 35 | Jul (rising) |
| 48 | Annual Fleabane | Erigeron annuus | Sunflowers, Daisies, Asters, and Allies | 35 | Jun (peak) |
| 49 | Orange Milkwort | Senega lutea | milkworts | 35 | Jun (peak) |
| 50 | Common Jewelweed | Impatiens capensis | balsam family | 34 | Sep (rising) |