Weeds are by definition, a plant out of place. Some are fairly easy to control, just pull them up and they are gone for the year. Others, however, art tougher than nails and, once they show up in your landscape, they are there for a long, long stay.

The crazy thing is that we often bring these thugs into our landscapes ourselves. They masquerade as "ornamental" plants the might add to the beauty of your landscape. Buyer beware.

Here are a few of the worst offenders:

  1. Japanese Knotweed - Polygonum cuspidatum

  2. Creeping Charlie - Glechoma hederacea

  3. Snow on the Mountain - Aegopodium podagraria

  4. Purple Loosestrife - Lythrum salicaria

  5. Star of Bethlehem - Ornithogalum umbellatum

  6. Japanese Fleeceflower - Polygonum reynoutria

  7. Giant Knotweed - Polygonum sachalinense

  8. Gooseneck Loosestrife - Lysimachia clethroides

  9. Periwinkle - Vinca minor

  10. Lily of the Valley - Convallaria majalis

  11. Tree Celadine - Macleaya cordata

  12. Obedient Plant - Physostegia virginiana

  13. Yellow Flag Iris - Iris pseudacorus

  14. Cypress Spurge - Euphorbia cyparissias

  15. Mock Strawberry - Duchesnea indica

  16. Horsetail - Equisetum hyemale

  17. Ribbon Grass - Phalaris arundinaceae

  18. Sneezeweed - Achillea ptarmica

  19. Herb Robert Geranium - Geranium robertianum

Note: We have provided some general information and observations on this topic aimed at the home gardener. Before you take any serious action in your landscape, check with your state's land grant university's Cooperative Extension Service for the most current, appropriate, localized recommendations.


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