Growth depends. Different types of grass require different care, including fertilizer.
In general, newly sodded or seeded lawns need more fertilizer to get established. Older lawns, with a healthy root system, may need none beyond the occasional organic boost.
Test soil nutrients in spring and fall. If deficient, apply granular lawn food or liquid concentrate; too much can cause weak growth, irregular patches, and disease problems.
Popular organics are compost, manure, and cottonseed meal; these provide slow-release nutrients that allow plants to ‘absorb’ what they need for steady growth. Look for special formulations like slow-release nitrogen fertilizer or sulfur-coated urea to deliver a consistent supply over time.
Always follow the application rates on product labels — applying too little won’t satisfy the grass’s needs while applying too much will burn it. Good watering habits help fertilizers reach roots more effectively; fertilizing when your lawn is dry provides poor results and extra work in evenings and mowing times.
Grass may also benefit from aeration once every few years; this process releases trapped carbon dioxide to make more room for fresh air and nutrient uptake at the root level. Ultimately, understanding your lawn’s needs is key to proper care — don’t cast aside organic solutions as an option when providing nutrition to your grass!