Mint blossoms, Glen Burnie, Maryland, September 2014. Photo by Diane F. Evartt.
Some herbs are extremely poisonous, and others are dangerous if handled improperly. If one such herb is eaten or handled, first aid is required.
Name | Scientific Name | Blooms | ||||||||||||||||||||||||
Alumroot, Hairy | Heuchera villosa Michx. | July - Oct. | ||||||||||||||||||||||||
Cabbage, Skunk | Symplocarpus foetidus (L.) Salisb. ex W.P.C. Barton | March - April | ||||||||||||||||||||||||
Catchfly, Sticky | Silene caroliniana Walter | April - May | ||||||||||||||||||||||||
Cattail, Broadleaf | Typha latifolia L. | May - June | ||||||||||||||||||||||||
Cattail, Narrowleaf | Typha angustifolia L. | June - July | ||||||||||||||||||||||||
Eelgrass, American | Vallisneria americana Michx. | July - Sept. | ||||||||||||||||||||||||
Fern, Royal | Osmunda regalis L. | Aug. | ||||||||||||||||||||||||
Mountainmint, Hoary | Pycnanthemum incanum (L.) Michx. | July - Aug. |
Needle, Adam's | Yucca filamentosa L. | June - Sept. | |||||||||||||||
Ragwort, Golden | Packera aurea (L.) Á. Löve & D. Löve | April - Aug. | |||||||||||||||
Root, Bowman's | Gillenia trifoliata (L.) Moench | May - July | |||||||||||||||
Root, Culver's | Veronicastrum virginicum (L.) Farw. | June - Sept. | |||||||||||||||
Rush, Canada | Juncus canadensis J. Gay ex Laharpe | July - Aug. | |||||||||||||||
Rush, Common | Juncus effusus L. | June - Sept. | |||||||||||||||
Adam's Needle (Yucca filamentosa L.), Glen Burnie, Maryland, June 2015. Photo by Diane F. Evartt.
Snakeroot, White | Ageratina altissima (L.) R.M. King & H. Rob. var. altissima | June - Aug. | |||||||||||||||||||||
Sneezeweed, Common | Helenium autumnale L. | Aug. - Nov. | |||||||||||||||||||||
Thoroughwort, Hyssopleaf | Eupatorium hyssopifolium L. | Aug. - Oct. | |||||||||||||||||||||
Threesquare, Common | Schoenoplectus pungens (Vahl) Palla var. pungens | June - Sept. | |||||||||||||||||||||
Ticktrefoil, Panicledleaf | Desmodium paniculatum (L.) DC. | July - Sept. | |||||||||||||||||||||
Valerian, Greek | Polemonium reptans L. | April - June | |||||||||||||||||||||
Wildrice, Annual | Zizania aquatica L. | June - Sept. | |||||||||||||||||||||
Woolgrass | Scirpus cyperinus (L.) Kunth | Aug. - Sept. |
Name | Scientific Name | Blooms | ||||||||||||||||||||||||||||||
Beefsteakplant | Perilla frutescens | June - Sept. | ||||||||||||||||||||||||||||||
Bugle, Common | Ajuga reptans | April - May | ||||||||||||||||||||||||||||||
Barberry, Japanese | Berberis thunbergii | April - May | ||||||||||||||||||||||||||||||
Buttercup, Fig | Ranunculus ficaria | March - June | ||||||||||||||||||||||||||||||
Deadnettle, Henbit | Lamium amplexicaule | March - May | ||||||||||||||||||||||||||||||
Deadnettle, Purple | Lamium purpureum | April - June | ||||||||||||||||||||||||||||||
Ivy, Ground | Glechoma hederacea | April - June | ||||||||||||||||||||||||||||||
Knapweed, Spotted | Centaurea maculosa | July - Aug. | ||||||||||||||||||||||||||||||
Knotweed, Giant | Fallopia sachalinensis | July - Aug. | ||||||||||||||||||||||||||||||
Loosestrife, Purple | Lythrum salicaria | July - Aug. |
Mustard, Garlic | Alliaria petiolata | May - June | ||||||||||||
Privet, Border | Ligustrum obtusifolium | May - June | ||||||||||||
Sorghum | Sorghum bicolor | July - Oct. | ||||||||||||
Spearmint | Mentha spicata | June - Aug. | ||||||||||||
Strawberry, Indian | Duchesnea indica | April - June |
Spearmint (Mentha spicata), Glen Burnie, Maryland, September 2014. Photo by Diane F. Evartt.
Tansy, Common | Tanacetum vulgare L. | Aug. - Sept. | ||||||||||||
Thistle, Bull | Cirsium vulgare | July - Sept. | ||||||||||||
Thistle, Canada | Cirsium arvense | June - Aug. | ||||||||||||
Thistle, Musk | Carduus natans | June - Oct. | ||||||||||||
Thistle, Spiny Plumeless | Carduus acanthoides | July - Oct. |
Tansy (Tanacetum vulgare L.), Glen Burnie, Maryland, September 2015. Photo by Diane F. Evartt.
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