Plants that assist each other to grow well, repel insects or even other plants when grown next to each other is called companion planting and can be a sustainable and eco-friendly way to improve and protect your garden against unwanted pests and disease.
Plants that add Lime (Calcium) to your Soil Naturally:
Buckwheat stores calcium, so when it’s composted or tilled under as a green manure it will add lime to your soil.
Lupine has very deep roots so it reaches the deep calcium in the soil. They do well in poor, gravelly areas so planting them there will help enrich the soil over time.
Melon leaves are rich in lime, so add them to your compost pile when the plants are done for the season.
Peas, beans, cabbages and turnips do well in soil containing lime.
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