H

hackberry
hackmatack
hair grass
hairy bead grass
half-chaff sedge
handsome-harry
harbinger-of-spring
hard-hack
hard-stem
harebell
hare-ear mustard
harlequin
harvest-lice
hawk's-beard
hawk's-bit
hawkweed
hawthorn
hay-scented fern
hazel
hazelnut
heal-all
heart's-ease
heath
heather
hedge-apple
hedge-hyssop
hedge-mustard
hedge-nettle
hedge-parsley
helleborine
hemicarpha
hemlock
hemlock-parsley
hemp
hemp-dogbane
hemp-nettle
hen-and-chickens
henbit
hepatica
herb bennet
herb-Sophia
hickory
hoary-alyssum
hoary-cress
hog-peanut
hogweed
hog-wort
holly
holly fern
hollyhock
honewort
honeysuckle
hop clover
hop-hornbeam
hops
hop sedge
hop-tree
horehound
horesemint
hornbeam
horned-pondweed
hornwort
horse-balm
horse-cane
horsefly-weed
horse-gentian
horsemint
horse-nettle
horseradish
horsetail
horse-tail
horseweed
hound's-tongue
huckleberry
hyssop

J

Jack-in-the-pulpit
Jacob's-ladder
Jersey tea
Jerusalem-artichoke
jet-bead
jewelweed
jimson-weed
Joe-Pye-weed
Johnny-jump-up
John's-cabbage
Johnson grass
joint-weed
jumpseed
Juneberry
June grass
juniper

K

kidney-vetch
king-devil
king-root
kinnickinnick
kiss-me-over-the-garden-gate
kitten's-tails
Klamath-weed
knapweed
knawel
knee grass
knotgrass
knotweed
kochia

L

Labrador-tea
lady fern
lady's-mantle
lady's-slipper
lady's-thumb
lady's-tresses
lake cress
lake sedge
lamb's-quarters
lantern-plant
larch
larkspur
laurel
lavender
lead-plant
leaf-cup
leather-leaf
leatherwood
leek
lens grass
leopard-flower
lespedeza
lettuce
licorice
life-of-man
lilac
lily
lily-of-the-valley
linden
lingonberry
lion's-foot
lion's-tail
lip fern
little-pod
live-forever
lobelia
lobularia
locoweed
locust
locust-weed
loosestrife
lop-seed
lotus
lotus-lily
lousewort
love grass
love-lies-bleeding
lungwort
lupine
lychnis
lyme grass
lythrum

madder
mad-woman's-milk
madwort
maidenhair fern
maiden's-tears
maize
male fern
mallow
mallow-rose
Maltese cross
mandarin
mandrake
manna grass
maple
marble-seed
mare's-tail
marguerite
marigold
marijuana
marram grass
marsh bedstraw
marsh-cress
marsh-elder
marsh fern
marsh mallow
marsh-marigold
marsh-pepper
Massachusetts fern
matricary
matrimony-vine
may-apple
mayflower
mayweed
mazus
meadow-beauty
meadow-fern
meadow grass
meadow-parsnip
meadow-pitchers
meadow-rue
meadowsweet
medick
melic
melic grass
melic-oats
melon
mermaid
mermaid-weed
mezereon
mignonette
milfoil
milk-purslane
milk-vetch
milkweed
milkwort
millet
mint
mint-geranium
mistletoe
miterwort
moccasin-flower
moneywort
monkey-flower
monk's-hood
moonseed
moonwort
moor grass
moose-berry
moosewood
morning-glory
moschatel
mosquito-fern
moss-pink
mother-of-thyme
motherwort
mountain-ash
mountain-bluet
mountain mint
mountain trumpet
mouse-ear
mouse-ear-cress
mouse's-tail
moxie
mud-purslane
mugwort
muhly
mulberry
mullein
mullein-foxglove
mullein-pink
muscle-wood
musk mallow
muskmelon
musk-root
mustard
myrtle

N

naiad
nail-wort
nannyberry
narrow-leaved
neck-weed
needle-and-thread
needle grass
nettle
New Jersey tea
New York fern
nightcaps
nightshade
nimble-will
ninebark
nipplewort
nut-rush
nut sedge

O

oak
oak fern
oats
oak sedge
oat grass
obedience
obedient plant
odontites
old-field-balsam
old-man's-whiskers
old-witch grass
oleaster
olive
onion
onosmodium
orache
orange-grass
orchard grass
orchid
orchis
orpine
osage-orange
ostrich fern
Oswego-tea
oval sedge
oxalis
ox-eye
oyster-plant

pad-leaf
pagoda-plant
paintbrush
painted-cup
pale-laurel
panic grass
pansy
papoose-root
paradise plant
parsnip
parthenium
partridgeberry
partridge pea
paspalum
pasqueflower
patience
pea
peach
pear
pearl-wort
pearly everlasting
pea-shrub
pea-tree
pea-vine
pellitory
pennycress
pennyroyal
pennywort
penstemon
peppergrass
pepperidge
peppermint
pepper-weed
perilla
perilla-mint
periwinkle
Peruvian-daisy
petunia
phacelia
phlox
pickerel-weed
piemarker
pig-nut
pigweed
pimpernel
pine
pineapple-weed
pinedrops
pinesap
pine-weed
pink
pink-queen
pinkweed
pinweed
pipes
pipewort
pipsissewa
pitcher-plant
plagiobothrys
plane-tree
plantain
plum
pod-grass
pogoda
pogonia
poinsettia
poison-hemlock
poison-ivy
poke
pokeberry
pokeweed
polemonium
polygala
polypody
polypogon
pomme-de-prairie
pond-lily
pondweed
poor-Joe
poor-man's-pepper
popcorn-flower
poplar
poppy
porcupine
possum-haw
potato-bean
potentilla
pot-marigold
poverty-weed
prairie-clover
prairie-dock
prairie-mimosa
prairie-parsley
prairie-plum
prairie-smoke
prairie-tea
prairie-turnip
pickle grass
pie plant
pin oak
plume grass
poppy mallow
porcupine grass
poverty grass
prickly-ash
prickly-pear
prickly poppy
pride-of-Ohio
primrose
Prince-of-Wales'-feather
prince's-feather
prince's-pine
princess'-pine
procession flower
proso millet
prunella
psyllium
puccoon
pumpkin
puncture-vine
purple rocket
purple-top
purslane
pusley
pussy-toes
putty-root
pyrola