Peters Professional 15-3-25 Flowering Crop Special plus Black Iron | 25lb (80/PL)

Chelated-Iron Flowering Formula for Bedding Plants, 25lb

Bedding plants and hanging baskets in full flower need potassium-forward nutrition to sustain bloom quality, but iron availability can lag if the chelation isn't strong enough. Peters Professional 15-3-25 Flowering Crop Special plus Black Iron is a water-soluble fertilizer with the same three-chelated-iron, M-77 system used across the Peters Professional Black Iron line, built here on a potassium-heavy 15-3-25 ratio for flowering crops.

Sold as a 25lb bag, 80 per pallet, acidic 34 lbs. CCE, no urea.

Key Features & Benefits

• Potassium-forward 15-3-25 ratio — supports bloom quality on flowering bedding plants and hanging baskets.
• Three chelated iron sources, including Black Iron — the same M-77 chelated system used across the line.
• Black Iron is the strongest iron chelate used for ornamentals — makes iron available across the widest pH range.
• Mild acidity, 34 lbs. CCE, no urea — a comparatively gentle technical profile among Peters Professional formulas.

Who Should Use Peters Professional 15-3-25 Flowering Crop Special

This fits growers of bedding plants and hanging baskets in active flower who want potassium-forward nutrition paired with reliable chelated-iron availability.

About Peters Professional 15-3-25 Flowering Crop Special

Peters Professional 15-3-25 Flowering Crop Special is manufactured by ICL Growing Solutions as part of the Peters Professional water-soluble fertilizer line, enhanced with ICL's proprietary M-77 chelating technology for efficient nutrient uptake.

Frequently Asked Questions

How and when should this fertilizer be fed to flowering crops?

Feed it through your regular water-soluble program once bedding plants and hanging baskets are actively flowering, since the 15-3-25 ratio is built to sustain bloom quality through that stage. Its mild 34 lbs. CCE acidity makes it suitable for repeated feedings without heavily acidifying growing media.

Why does this formula favor potassium so heavily?

The 15-3-25 ratio is deliberately potassium-forward relative to nitrogen and phosphorus, which supports flower and bloom quality on bedding plants and hanging baskets. That's the main difference between this Flowering Crop Special and the nitrogen-forward Petunia Special formula.

Does this formula also address iron availability?

Yes, it carries the same formulation of three chelated irons, including Black Iron, found across the Peters Professional Black Iron line. Black Iron is the strongest iron chelate used for growing ornamentals, keeping iron available over a wide pH range even as the crop flowers.

What plants is this formula labeled for?

It's labeled for use on bedding plants and hanging baskets, positioning it as a flowering-stage feed for retail-facing crops. Its mild acidity also makes it a gentler option than some of the more acidic Peters Professional formulas.

What size and packaging is this listing?

It ships as a 25lb bag, supplied 80 per pallet, matching its mild acidic rating of 34 lbs. CCE. That volume suits commercial greenhouse bedding plant and basket production.