Comparison: Best Liquafeed All Purpose Plant Food (Updated | Nov 11th)

A refill pack contains only the liquid fertilizer bottles, while a starter kit includes both the bottles and the LiquaFeed garden feeder that attaches to a hose. The feeder automates the correct mixing of fertilizer with water, making feeding as easy as watering. If you already own a feeder, refills are the most cost‑effective choice.

All standard 16 oz LiquaFeed bottles are rated to feed up to 400 sq ft of garden space when applied every 7‑14 days. The coverage claim is consistent across the All Purpose, Bloom Booster, and refill versions because they share the same concentration. Only the specialized Bloom Booster bottle adds extra nutrients for flower production, but its coverage remains 400 sq ft.

Yes, the 4‑pack refill (four 567 g bottles) reduces the per‑bottle price compared with buying single 16 oz bottles, giving you roughly a 10‑15 % savings. Because each bottle still covers 400 sq ft, the total coverage jumps to 1,600 sq ft, which is ideal for larger gardens. The pack also eliminates the need to repeatedly add items to your cart.

LiquaFeed is a water‑soluble concentrate, so you can mix it in a watering can at the recommended rate and apply it directly to soil. This method works for indoor plants and small containers, but you must measure carefully to avoid over‑feeding. The feeder simplifies the process for larger outdoor areas by delivering the exact mix automatically.

Bloom Booster contains a higher phosphorus ratio to promote more abundant and vibrant flowers, while the All Purpose blend balances nitrogen, phosphorus, and potassium for overall growth. Both formulas are compatible with the same feeder and cover the same 400 sq ft per bottle. Use Bloom Booster when flowering performance is your top priority.

A five‑bottle bulk bundle (each 16 oz) provides coverage for up to 2,000 sq ft and typically offers a 20‑25 % discount per bottle versus single purchases. This translates to a lower cost per square foot, making the bundle the best value for gardeners with extensive beds or multiple planting zones. The savings increase further when you combine the bundle with a reusable feeder you already own.

LiquaFeed is formulated for a wide range of outdoor and indoor plants, including flowers, vegetables, trees, shrubs, and houseplants. However, sensitive seedlings or plants that prefer low‑nutrient conditions, such as certain carnivorous species, may react poorly to the added fertilizer. In those cases, use a diluted mix or a specialized low‑N formula.

For most plants, feeding every 7‑14 days yields the best results, aligning with the product’s recommendation. Apply the fertilizer to the base of each plant while the soil is moist to ensure even absorption. Over‑application can lead to leaf burn, so stick to the suggested schedule and dosage.