UMass Extension Weed Herbarium
| Common Name | Scientific Name | Family Name | |
|---|---|---|---|
| hawksbeard, narrowleaf | Crepis tectorum | Asteraceae (Compositae) - Aster or Sunflower Family | |
| hawkweed | Hieracium pratense | Asteraceae (Compositae) - Aster or Sunflower Family | |
| hawkweed, European | Hieracium vulgatum | Asteraceae (Compositae) - Aster or Sunflower Family | |
| hawkweed, field | see - hawkweed | ||
| hawkweed, orange | Hieracium aurantiacum | Asteraceae (Compositae) - Aster or Sunflower Family | |
| hawkweed, panicled | Hieracium paniculatum | Asteraceae (Compositae) - Aster or Sunflower Family | |
| hayfever weed | see - ragweed , common | ||
| heal-all | Prunella vulgaris | Lamiaceae (Labiatae) - Mint Family | |
| heliotrope, garden | see - valerian , common | ||
| hellebore, false or Indian | see - false hellebore, green | ||
| hemp, American | see - dogbane, hemp | ||
| hemp, Indian | see - dogbane, hemp | ||
| hempnettle, common | Galeopsis tetrahit | Lamiaceae (Labiatae) - Mint Family | |
| henbit | Lamium amplexicaule | Lamiaceae (Labiatae) - Mint Family | |
| herdgrass | see - timothy | ||
| hog-peanut | Amphicarpaea bracteata | Fabaceae (Leguminosae) - Pea or Bean Family | |
| honeysuckle, Japanese | Lonicera japonica | Caprifoliaceae - Honeysuckle Family | |
| hops, Japanese | Humulus japonicus | Cannabaceae - Hemp Family | |
| horsebalm | Collinsonia canadensis | Lamiaceae (Labiatae) - Mint Family | |
| horsenettle | Solanum carolinense | Solanaceae - Nightshade Family | |
| horsetail, field | Equisetum arvense | Equisetaceae - Horsetail Family | |
| horsetail, scouringrush | see - scouring rush | ||
| horseweed | Conyza canadensis | Asteraceae (Compositae) - Aster or Sunflower Family |