Fertilizing asparagus - Ask Extension
Is it good to apply aged chicken manure to asparagus bed in the fall
Knowledgebase
Fertilizing asparagus #944281
Asked September 04, 2026, 2:55 PM EDT
Is it good to apply aged chicken manure to asparagus bed in the fall
Josephine County Oregon
Expert Response
Yes, aged chicken manure is very good for a garden because it provides a rich source of nitrogen, phosphorus, and potassium.
It boosts rapid plant growth. Aging breaks down high ammonia levels so the material will not burn or kill plant roots. It adds organic matter that helps build better soil structure over time. Fresh or partially aged manure should sit for 3 to 6 months before use. Proper composting or aging lowers the risk of harmful bacteria like E. coli or Salmonella. Apply manure at least 90 days before harvesting crops that do not touch the ground and 120 days before crops that touch the soil.
