Age Old Bloom 5-10-5 Liquid Fertilizer, 55 gal

Give Flowering Plants the Phosphorus Push They're Asking For

Once plants shift into flowering, their nutrient needs shift too — heavy nitrogen feeds that worked during vegetative growth can leave them short on the phosphorus that drives flower and fruit development.

Age Old Bloom 5-10-5 is an odorless formula built around a fast-acting, natural phosphorus source, supplying the higher phosphate levels that encourage earlier flowering and better fruit set across most fruiting plants and vegetables.

It works as a foliar feed or a soil drench, and many growers also soak roots in diluted Bloom before transplanting to encourage greater root mass from the start.

Key Features & Benefits

• Odorless 5-10-5 formula — supplies a fast-acting, natural source of phosphorus without the smell of conventional bloom feeds.
• High phosphate levels — encourage earlier flowering and stronger fruit set across most fruiting plants and vegetables.
• Works as foliar feed or soil drench — fits whatever feeding method already suits your space and schedule.
• Doubles as a transplant root soak — lets you soak roots in diluted Bloom before transplanting to build a greater root mass.
• Suited to indoor and outdoor gardens — performs consistently whether plants are growing under lights or in natural sunlight.
• Sized from 32 oz to 55 gallons — lets growers match the bottle to their garden, from a few containers to a full commercial operation.

Who Should Use Age Old Bloom

Growers transitioning plants into the flowering stage who want a natural, odorless phosphorus source that supports earlier flowering and stronger fruit set — whether feeding a few containers or a full operation, with the 55 gal size matched to that scale.

Building a Full-Cycle Feeding Program

Bloom is designed to follow Age Old Grow as plants move from vegetative growth into flowering — feed with Grow through the vegetative stage, then transition to Bloom once flowering begins, choosing a size for each that matches how much you're feeding.

Frequently Asked Questions

When should I start feeding with Age Old Bloom?

Most growers transition from Age Old Grow to Bloom once plants begin flowering, when phosphorus needs increase and flower or fruit development ramps up.

Can Bloom be used as a root soak for transplants?

Yes — diluted Bloom can be used to soak roots before transplanting, which many growers use to encourage greater root mass at the start of a cycle.

Is Age Old Bloom safe for vegetables as well as ornamentals?

Yes — it's labeled for use on most fruiting plants and vegetables as well as ornamental plants, indoors or outdoors.

What's the NPK analysis of Age Old Bloom?

Bloom carries a 5-10-5 analysis, with elevated phosphorus levels designed to encourage earlier flowering and stronger fruit set.