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

The 2‑Pack (ASIN B01EBEZLWM or B07QK7FL4M) gives you two 4‑ounce bottles, each with its own dropper, which is handy for keeping one in the house and one in the garden. The single 8‑ounce bottle (ASIN B018H2BBX2 or B08LVFTD45) provides twice the volume in one container, often at a lower price per ounce. Choose the pack if you prefer separate containers for indoor and outdoor use, or the larger bottle for bulk feeding.

If you have a small collection of houseplants or only need occasional feeding, the 4‑ounce bottles are sufficient and easier to store. For larger gardens, multiple flower beds, or frequent repotting, the 8‑ounce bottle reduces the number of refills and can be more cost‑effective. Consider how often you water and whether you want a dedicated bottle for indoor versus outdoor plants.

Yes, Schultz uses a consistent 7‑drop‑per‑quart guideline for its 10‑15‑10 All Purpose Plant Food Plus, whether it’s sold in a 2‑Pack or a single bottle. The dropper is calibrated to deliver the correct amount of nutrients each time you water. This uniformity makes it easy to switch between different package sizes without changing your feeding routine.

Absolutely. All versions of the 10‑15‑10 formula, including the 2‑Pack and the 8‑ounce bottle, are labeled for indoor and outdoor use, covering houseplants, flowers, vegetables, shrubs, and trees. The balanced nutrient ratio promotes healthy growth in a wide range of species. Just follow the 7‑drops‑per‑quart instruction for optimal results.

The kit (ASIN B01DJSDW5E) pairs the 10‑15‑10 All Purpose formula with the 2‑7‑7 Cactus Plus, giving you two specialized nutrients in one purchase. It’s convenient if you have both succulent/cactus collections and typical houseplants, allowing you to use the right formula for each type. The included droppers make measuring simple, and the combined price is often lower than buying the two bottles separately.

All listed Schultz plant foods are manufactured in the United States, which generally ensures consistent quality control and adherence to agricultural standards. This origin can give shoppers confidence in ingredient purity and label accuracy. However, the performance of the product still depends on proper application and plant suitability.

Both SPF45170 (8 oz) and SPF45160 (4 oz) contain the same 10‑15‑10 nutrient ratio, so the concentration per ounce is identical. The larger bottle simply offers double the volume, which can be more economical for frequent users. Choose the size that matches your usage rate and storage preferences.

Purchasing the 2‑Pack often saves a few cents per ounce compared to buying two individual bottles, and it includes two droppers for easy dosing. It also reduces packaging waste and ensures you have a spare bottle on hand for repotting or travel. For most gardeners, the 2‑Pack is the most convenient and cost‑effective option.