Should perennial plants be fertilized in the fall? One example - blueberries.
Certified GKH Gardening Expert
Blueberries should be fertilized in the early spring as described in these articles:
Most perennials should be fertilized in the early spring as well, but some perennials don't typically need fertilizer unless a soil test shows nutrient deficiencies. Compost can also be used instead of synthetic fertilizer because it is less likely to burn plants and its effect provide long-lasting benefite: