Osmocote Plus 15-9-12 8-9mo Fertilizer | 50lb (40/PL)

Low-Salt Starter Feed for Propagation and Overwintering, 8-9 Month

Rooting cuttings and late-season perennials sitting in storage are especially sensitive to salt buildup, which a standard-release fertilizer can worsen right when roots are most vulnerable. Osmocote Plus 15-9-12 (8-9mo.) is commonly used in propagation and when planting up perennials and nursery stock late in the season to be overwintered, thanks to a low initial release.

Sold as a 50lb bag, 40 per pallet, 8-9 month release.

Key Features & Benefits

• Low initial release — helps maintain low salt levels during storage and rooting.
• Commonly used in propagation — where sensitive new roots benefit from a gentler nutrient start.
• Suited to late-season planting for overwintering — perennials and nursery stock held through winter storage.
• Resin-coated N-P-K plus micronutrients — an all-in-one 15-9-12 formulation over an 8-9 month window.

Who Should Use Osmocote Plus 15-9-12 (8-9mo.)

This fits propagators rooting cuttings and nursery growers planting up perennials and stock late in the season for overwintering, where a low initial salt release protects sensitive roots during storage.

About Osmocote Plus 15-9-12 8-9 Month

Osmocote Plus 15-9-12 8-9 Month is manufactured by ICL Growing Solutions, part of the Osmocote family of resin-coated controlled-release fertilizers built for commercial greenhouse and nursery production.

Frequently Asked Questions

How and when should this fertilizer be used?

Incorporate it when propagating cuttings or planting up perennials and nursery stock late in the season ahead of overwintering. Its low initial release is specifically timed to protect roots during that rooting and storage period rather than pushing nutrients hard right away.

Why does a low initial release matter for propagation?

The low initial release helps maintain salt levels at low levels during storage and rooting, which matters because new roots and dormant stock are more sensitive to salt buildup than an actively growing crop. That gentler start is the main reason it's chosen over a faster-release formulation for these uses.

What crops or timing is this formulation built for?

It's commonly used in propagation and when planting up perennials and nursery stock late in the season to be overwintered. That timing distinguishes it from Osmocote Plus versions meant for baskets and season-long container production.

What settings is this formulation suited for?

Labeled uses span greenhouse, nursery, and foliage production, container gardens, interiorscapes, and landscapes. Propagation and late-season overwintering storage are its most specific called-out uses within that broader range.

What size and packaging is this listing?

It ships as a 50lb bag, 40 per pallet, with an 8-9 month resin-coated release. That volume and duration suit commercial propagation and overwintering programs.