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Be they ever so lovely, some plants, either seeders or creepers, are nothing but extra work in the wrong spot. Be careful where you plant the following—if at all.
Creepers
- Various campanulas, such as Campanula glomerata, C. punctata and C. rapunculoides
- Chinese lantern (Nymania capensis)
- Comfrey
- Crown vetch (Coronilla varia)
- Old orange daylily
- Deadnettle
- Goutweed
- Some ornamental grasses, such as river oats, fountain grass, ribbon grass
- Houttuynia cordata ‘Chameleon’
- Japanese anemones
- Lemon balm
- Lily-of-the-valley
- Mints
- Periwinkle
- Tansy
- Western mugwort cultivars (Artemisia ludoviciana)
- Yarrow
Seeders
- Some alliums, such as Allium moly and garlic chives (A. tuberosum)
- Anise hyssop
- Borage
- Bronze fennel
- Forget-me-nots
- Hollyhocks
- Lady’s mantle (manageable)
- Annual poppies (manageable if you are willing to thin thousands to a few)
- Plume poppy (Macleaya cordata)
- Spiderwort (Tradescantia x andersoniana cvs.)
- Sweet cicely
- Sweet violets (hard to root out)
- Valerian