Long-stalked Pondweed
- Peak month
- July
- Records since 2000
- 84
- Scientific name
- Potamogeton praelongus
Paeonia mascula
- Peak month
- May
- Records since 2000
- 84
- Group
- Flowering plants
Stiffleaf cheesewood
- Peak month
- December
- Records since 2000
- 84
- Scientific name
- Pittosporum crassifolium
Tall Bog-Sedge
- Peak month
- June
- Records since 2000
- 84
- Scientific name
- Carex magellanica
Touch-me-not Balsam
- Peak month
- September
- Records since 2000
- 84
- Scientific name
- Impatiens noli-tangere
Chaerophyllum aureum
- Peak month
- May
- Records since 2000
- 83
- Group
- Flowering plants
Creeping Bellflower
- Peak month
- July
- Records since 2000
- 83
- Scientific name
- Campanula rapunculoides
Cultivated radish
- Peak month
- May
- Records since 2000
- 83
- Scientific name
- Raphanus sativus
Cymbalaria pallida
- Peak month
- June
- Records since 2000
- 83
- Group
- Flowering plants
Flower of an hour
- Peak month
- August
- Records since 2000
- 83
- Scientific name
- Hibiscus trionum
Oldfashioned weigela
- Peak month
- May
- Records since 2000
- 83
- Scientific name
- Weigela florida
Saltmarsh Flat-sedge
- Peak month
- June
- Records since 2000
- 83
- Scientific name
- Blysmus rufus
Short-styled Field-rose
- Peak month
- September
- Records since 2000
- 83
- Scientific name
- Rosa stylosa
Taraxacum undulatiflorum
- Peak month
- April
- Records since 2000
- 82
- Group
- Flowering plants
Two-flowered Rush
- Peak month
- August
- Records since 2000
- 82
- Scientific name
- Juncus biglumis
Dark leaved willow
- Peak month
- July
- Records since 2000
- 81
- Scientific name
- Salix myrsinifolia
Tufted Loosestrife
- Peak month
- June
- Records since 2000
- 81
- Scientific name
- Lysimachia thyrsiflora
Clematis montana
- Peak month
- May
- Records since 2000
- 80
- Group
- Flowering plants
Coral-necklace
- Peak month
- August
- Records since 2000
- 80
- Scientific name
- Illecebrum verticillatum
Crocus speciosus
- Peak month
- October
- Records since 2000
- 80
- Group
- Flowering plants
Flat-sedge
- Peak month
- July
- Records since 2000
- 80
- Scientific name
- Blysmus compressus
Flowering quince
- Peak month
- April
- Records since 2000
- 80
- Scientific name
- Chaenomeles speciosa
Geum intermedium
- Peak month
- May
- Records since 2000
- 80
- Group
- Flowering plants
Hieracium maculatum
- Peak month
- June
- Records since 2000
- 80
- Group
- Flowering plants
Narrow-bracted Dandelion
- Peak month
- April
- Records since 2000
- 80
- Scientific name
- Taraxacum atactum
Ophrys pietzschii
- Peak month
- April
- Records since 2000
- 80
- Group
- Flowering plants
Pterocarya fraxinifolia
- Peak month
- August
- Records since 2000
- 80
- Group
- Flowering plants
Taraxacum aequilobum
- Peak month
- April
- Records since 2000
- 80
- Group
- Flowering plants
Bog Orchid
- Peak month
- July
- Records since 2000
- 79
- Scientific name
- Hammarbya paludosa
Brown-eyed Susan
- Peak month
- August
- Records since 2000
- 79
- Scientific name
- Rudbeckia laciniata
Dutch crocus
- Peak month
- March
- Records since 2000
- 79
- Scientific name
- Crocus vernus
Dutch elm
- Peak month
- May
- Records since 2000
- 79
- Scientific name
- Ulmus hollandica
Red Pondweed
- Peak month
- August
- Records since 2000
- 79
- Scientific name
- Potamogeton alpinus
Woad
- Peak month
- May
- Records since 2000
- 79
- Scientific name
- Isatis tinctoria
Arctic Mouse-ear
- Peak month
- August
- Records since 2000
- 78
- Scientific name
- Cerastium nigrescens
Bermuda grass
- Peak month
- August
- Records since 2000
- 78
- Scientific name
- Cynodon dactylon
Cotoneaster hjelmqvistii
- Peak month
- August
- Records since 2000
- 78
- Group
- Flowering plants
Disphyma crassifolium
- Peak month
- June
- Records since 2000
- 78
- Group
- Flowering plants
Douglas spirea
- Peak month
- July
- Records since 2000
- 78
- Scientific name
- Spiraea douglasii
Mentha verticillata
- Peak month
- August
- Records since 2000
- 78
- Group
- Flowering plants
Narrow-leaved Bitter-cress
- Peak month
- May
- Records since 2000
- 78
- Scientific name
- Cardamine impatiens
Plains eryngo
- Peak month
- July
- Records since 2000
- 78
- Scientific name
- Eryngium planum
Suffocated Clover
- Peak month
- May
- Records since 2000
- 78
- Scientific name
- Trifolium suffocatum
Wild Leek
- Peak month
- July
- Records since 2000
- 78
- Scientific name
- Allium ampeloprasum
Soft-leaved Sedge
- Peak month
- May
- Records since 2000
- 77
- Scientific name
- Carex montana
Black Walnut
- Peak month
- August
- Records since 2000
- 76
- Scientific name
- Juglans nigra
Chaffweed
- Peak month
- July
- Records since 2000
- 76
- Scientific name
- Lysimachia minima
Elongated sedge
- Peak month
- May
- Records since 2000
- 76
- Scientific name
- Carex elongata