Definition that contains rich soil
- loam a rich soil consisting of a mixture of sand and clay and decaying organic materials
- burweed marsh elder tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever
- false ragweed tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever
- green manure a growing crop that is plowed under to enrich soil
- iva xanthifolia tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever