Fertilizers
Ammonium Sulfate 21-0-0
A nitrogen and sulphur fertilizer that can acidify soil with repeated use.
Explore the guideFertilizers
Match this name to your package.01 / UNDERSTAND
What is Ammonium Sulfate 21-0-0?
A nitrogen and sulphur fertilizer that can acidify soil with repeated use.
Start with the right purpose
Check both nitrogen need and soil pH before applying.
Before you begin
Follow the handling and storage directions on your package. Keep the product identified in its original labelled container.
02 / MEASURE
How much to apply
Amounts from the supplied product instructions.
SUPPLIED APPLICATION RATE
Watering / General Garden Use Mix 5 g (about 1 tsp) with 4 L (1 gal) of water . Apply around the root zone every 2–4 weeks during active growth. Garden Beds – Dry Application Apply approximately 2–3 g per sq. ft. Spread evenly around plants, keep away from direct contact with stems, and water thoroughly after application. Lawns Apply approximately 2.5 g per sq. ft. (about 2.5 kg per 1,000 sq. ft. ) Water thoroughly after application.
Source: Guide_Ammonium Sulfate 21-0-0.pdf. These are the supplied guide’s rates, not independently verified manufacturer directions. Follow the exact product label if it differs.
03 / APPLY
How to apply
Directions from the supplied product guide.
Watering / General Garden Use Mix 5 g (about 1 tsp) with 4 L (1 gal) of water . Apply around the root zone every 2–4 weeks during active growth. Garden Beds – Dry Application Apply approximately 2–3 g per sq. ft. Spread evenly around plants, keep away from direct contact with stems, and water thoroughly after application. Lawns Apply approximately 2.5 g per sq. ft. (about 2.5 kg per 1,000 sq. ft. ) Water thoroughly after application.
Follow the handling and storage directions on your package. Keep the product identified in its original labelled container.
04 / TIMING
When to apply
Use during periods of active vegetative growth when plants need additional nitrogen. Suitable for vegetables, leafy greens, lawns, flowers, shrubs, and established garden plants. Avoid heavy applications late in the growing season when excessive new growth is not desired.
Use the interval stated in the supplied directions above. Where none is specified, follow the exact product label.
Record the amount and application date. Consider your growing conditions before repeating.
05 / GOOD HABITS
Tips & things to avoid
Helpful habits
- Check both nitrogen need and soil pH before applying.
- Keep the package label and record the date, amount and method used.
- Follow the handling and storage directions on your package. Keep the product identified in its original labelled container.
Things to avoid
- Do not choose an amount from the product name alone; confirm the formulation and intended use.
- Do not transfer the dose or interval from a different product.
- Do not treat a general guide as a substitute for the exact product label.
06 / QUICK ANSWERS
Common questions
How do I choose the amount?
Use the supplied amounts in the dosage panel above for the stated application. Match the product and growing method to your package.
What should I check first?
Check both nitrogen need and soil pH before applying.
Can I repeat the same application?
Follow the repeat interval in the supplied directions, where stated, and check the exact product label.
What needs particular care with this product?
Follow the handling and storage directions on your package. Keep the product identified in its original labelled container.
Sources and rate verification
Based on your saved instructions: Guide_Ammonium Sulfate 21-0-0.pdf. The saved review does not verify an exact product dose. These references support general principles, not manufacturer approval.
The stated 21% nitrogen and approximately 24% sulphur are consistent with common ammonium sulphate fertilizer, but the actual label must confirm them. Drench, bed and lawn rates are not interchangeable.
07 / RELATED GUIDES
Explore other product guides
Compare purposes before choosing a product. These are not instructions to combine products.
GROW BETTER. TOGETHER.
Need help with this product?
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