1. Dandelion
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Why keep it: Deep roots break up compacted soil and bring nutrients (like calcium) closer to the surface. Leaves are edible and rich in vitamins.
2. Comfrey
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Why keep it: Excellent for compost and as a natural fertilizer; its leaves can be used as mulch to enrich garden beds.
3. Marigold
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Why keep it: Repels nematodes and harmful insects; attracts pollinators.
4. Clover
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Why keep it: Fixes nitrogen in the soil naturally, improving fertility for surrounding plants.
5. Yarrow
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Why keep it: Attracts beneficial insects, supports pollination, and can be used in herbal remedies.
6. Borage
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Why keep it: Improves soil, attracts pollinators, and its flowers can be used in salads or teas.
Tip: If the plant is spreading aggressively, you can trim or contain it, but don’t uproot it completely if it benefits your garden ecosystem.
If you want, I can give a list of “magic or folklore plants” that are said to protect your garden if left untouched—these are often overlooked but have interesting history. Do you want me to do that?