Similar to: Roots Organics Nitrogen Bat Guano

Top Picks

IRONITE II
Top Pick

Best quick-fix fertilizer for reviving yellowing lawns and diverse garden plants.

This is the quickest way to turn a sad, yellowing lawn into a deep, vibrant green without the anxiety of accidentally burning your plants. It’s a gentle, versatile solution that works on everything from shrubs to vegetables, though you’ll still need a separate fertilizer for long-term, deep-root nourishment.

Greens Lawn

Soil Safe

Multi-Plant Nourishment

Promotes Growth

Scotts Turf Builder Starter Food
Runner-Up

Best fertilizer for establishing new grass and overseeding projects.

This is the ultimate shortcut for establishing a lush lawn from scratch or overseeding thin patches. It prioritizes rapid root development to guarantee density, though you will have to commit to consistent watering to see those promised results.

Faster Growth

Root Support

New Lawns

All Grass Types

Down to Earth Fish Meal
Best Value

Best organic nutrient boost for gardeners seeking vigorous early-season plant growth.

This potent, fish-based meal is the secret weapon for jumpstarting sluggish spring growth and building resilient root systems. It’s a bit pungent during application, but the trade-off is a thriving, biologically active soil that synthetic alternatives simply can't replicate.

Natural Nutrients

Early Growth

Soil Health

Root Growth

Best nutrient mix for vegetable gardeners seeking consistent, healthy plant growth.

Best root-boosting fertilizer for gardeners preparing new beds or winterizing lawns.

Best soil amendment for gardeners struggling with heavy clay or compaction.

Best budget-friendly choice for homeowners establishing a new lawn.

Best organic phosphorus source for home gardeners seeking robust plant development.

Best high phosphorus fertilizer for home gardeners seeking vibrant floral displays.

Best all-in-one nourishment for container-grown olive tree enthusiasts.

Best high-nitrogen fertilizer for professional turf managers and commercial landscapers.

Best nitrogen booster for gardeners seeking rapid, vibrant lawn and plant growth.

Best soil balancer for homeowners looking to revitalize acidic, nutrient-depleted lawns.

Best restorative treatment for homeowners reviving stressed or damaged lawns.

Best low-maintenance fertilizer for busy gardeners seeking vibrant, healthy plants.

Best long-lasting fertilizer for homeowners seeking a lush, low-maintenance lawn.

Best phosphorus source for gardeners growing bulbs, roses, and vegetables.

Best low-maintenance fertilizer for busy gardeners seeking vibrant, healthy outdoor plants.

Best calcium-magnesium supplement for growers seeking vigorous, high-yield plant development.

Best high-nitrogen solution for homeowners maintaining large, lush green lawns.

Best organic nitrogen boost for vigorous vegetable and houseplant growth.

Best balanced fertilizer for professional growers managing chloride-sensitive crops.

Best organic soil amendment for gardeners seeking healthier, more resilient plants.

Best natural fertilizer for gardeners seeking vibrant, long-lasting floral blooms.

Best soil conditioner for gardeners struggling with heavy, compacted clay soil.

Best dual-action solution for homeowners seeking weed-free, drought-resistant lawns.

Best balanced fertilizer for establishing new grass and strengthening root systems.

Best seasonal lawn treatment for homeowners seeking weed-free, vibrant green grass.

Best organic root booster for gardeners seeking healthier, more resilient plants.

Best natural soil amendment for organic gardeners and livestock owners.

Best ripening supplement for growers seeking heavier, more abundant floral yields.

Best balanced fertilizer for home gardeners managing lawns and vegetable patches.

Best organic root booster for home gardeners seeking healthier, more vigorous plants.

Best organic fertilizer for gardeners seeking healthier soil and robust plants.

Best natural amendment for enhancing garden and plant vitality.

Best seasonal treatment for enhancing lawn health and vigor.

Best soil enhancer for home gardeners seeking simple, effective lawn care.

Best specialized nutrient boost for home orchard enthusiasts.

Best soil treatment for homeowners struggling with dry and patchy lawns.

Best high nitrogen organic amendment for gardeners seeking lush vegetative growth.

Best organic soil amendment for eco-conscious gardeners seeking stronger plant immunity.

Best natural fertilizer for pet owners seeking safe, robust indoor growth.

Best organic fertilizer for gardeners seeking consistent, low-maintenance plant nourishment.

Best all-in-one solution for homeowners seeking a weed-free spring lawn.

Best quick-acting solution for homeowners seeking rapid lawn greening and health.

Best dual-action solution for gardeners wanting effortless weed control and nourishment.

Best natural fertilizer for home gardeners seeking a bountiful tomato harvest.

Best organic nutrient source for sustainable home gardeners.

Best long-lasting fertilizer for busy gardeners managing diverse indoor and outdoor plants.

Best nitrogen supplement for professional hydroponic crop growers.

Best dual-action solution for homeowners wanting a simple, weed-free lawn.