Crop,Feeder type,At planting,Follow-up feeding,Notes
Tomatoes,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,Add bone meal to the planting hole to support root establishment
Peppers,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,Add bone meal to the planting hole to support root establishment
Corn,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Squash,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Cucumbers,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Eggplant,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Cabbage,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Broccoli,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Brussels sprouts,Heavy,5-10-5 or 10-10-10 worked into soil,Side-dress balanced fertilizer 3-4 weeks after transplanting; switch to low-nitrogen 5-10-10 once flowering begins,High-output producer; exhausts soil nutrients quickly
Lettuce,Medium,One application of balanced fertilizer at planting,Optional second light nitrogen feed mid-season if growth slows,Leafy green
Spinach,Medium,One application of balanced fertilizer at planting,Optional second light nitrogen feed mid-season if growth slows,Leafy green
Kale,Medium,One application of balanced fertilizer at planting,Optional second light nitrogen feed mid-season if growth slows,Leafy green
Beets,Medium,One application of balanced fertilizer at planting,Adequate potassium for storage quality; reduce nitrogen in the final 4 weeks before harvest,Excess late nitrogen causes forking in carrots and poor storage in beets
Carrots,Medium,One application of balanced fertilizer at planting,Adequate potassium for storage quality; reduce nitrogen in the final 4 weeks before harvest,Excess late nitrogen causes forking in carrots and poor storage in beets
Onions,Medium,One application of balanced fertilizer at planting,Adequate potassium for storage quality; reduce nitrogen in the final 4 weeks before harvest,Excess late nitrogen causes forking in carrots and poor storage in beets
Garlic,Medium,One application of balanced fertilizer at planting,Adequate potassium for storage quality; reduce nitrogen in the final 4 weeks before harvest,Excess late nitrogen causes forking in carrots and poor storage in beets
Potatoes,Medium,One application of balanced fertilizer at planting,Adequate potassium for storage quality; reduce nitrogen in the final 4 weeks before harvest,Excess late nitrogen causes forking in carrots and poor storage in beets
Beans,Light,Little or none; single phosphorus application (bone meal) at planting,None,Fixes its own nitrogen via root bacteria; added nitrogen reduces pod production
Peas,Light,Little or none; single phosphorus application (bone meal) at planting,None,Fixes its own nitrogen via root bacteria; added nitrogen reduces pod production
Radishes,Light,Little or none; single phosphorus application (bone meal) at planting,None,Fast crop; lean soil is sufficient
Basil,Light,Little or none; single phosphorus application (bone meal) at planting,None,Herbs prefer lean conditions and produce more aromatic oils in less fertile soil
Parsley,Light,Little or none; single phosphorus application (bone meal) at planting,None,Herbs prefer lean conditions and produce more aromatic oils in less fertile soil
Thyme,Light,Little or none; single phosphorus application (bone meal) at planting,None,Herbs prefer lean conditions and produce more aromatic oils in less fertile soil
Oregano,Light,Little or none; single phosphorus application (bone meal) at planting,None,Herbs prefer lean conditions and produce more aromatic oils in less fertile soil

Source: GrowersGuide.ca — https://growersguide.ca/blog/fertilizer-guide