Grow More® Magnum Rose Food 8-10-8 — 25 lb Bag

Complete One-Step Rose Fertilizer, Sized as a 25 lb Bag, With Chelated Micronutrients

Roses that grow full but bloom thin, or that yellow mid-season despite regular feeding, usually need more than a basic NPK mix. Grow More Magnum Rose Food 8-10-8 combines a balanced macronutrient ratio with a fully chelated micronutrient package and a built-in soil penetrant, so a single soluble product covers root development, bloom production, and the trace-element needs that keep roses from fading between feedings.

Available as a 25 lb Bag, this format suits the volume home gardeners and landscape crews need for a season of regular rose feeding.

Key Features & Benefits

• 8-10-8 NPK Ratio: Balanced formula with elevated phosphorus for root development and blooms, alongside the nitrogen and potassium roses need for strong stems and disease resistance.
• Chelated Micronutrients: Stay plant-available across a wide soil pH range, heading off the yellowing and weak stems that mid-season deficiencies cause.
• Built-In Soil Penetrant: A wetting agent carries nutrients into the root zone even in compacted or heavy clay soils.
• One-Step Simplicity: A complete fertilizer in one product, without blending separate macro and micronutrient supplements.
• Water Soluble: Dissolves fully for use as a soil drench or diluted feed, reaching the root zone quickly.

Who Should Use This

Home gardeners, landscape professionals, and greenhouse growers who want one reliable fertilizer covering a rose's full nutritional needs — without juggling multiple supplements — are the direct fit, especially in poor-quality soils or areas with recurring micronutrient deficiency issues. It works equally well for hybrid teas, floribundas, climbers, miniatures, and shrub roses.

About Grow More Inc.

Grow More Inc. has manufactured fertilizers since 1918, when it began as National Chemical Company in Hollywood, California; the company now operates from Gardena, California with a rose-specific formula built into its broader ornamental and agricultural fertilizer catalog.

Frequently Asked Questions

How often should I fertilize roses with Magnum Rose Food?

Apply every 2 to 4 weeks during the active growing season, from early spring through late summer. Reduce or stop feeding in late fall so plants can harden off before dormancy.

Can I use Magnum Rose Food as a foliar spray?

Yes, diluted to the recommended rate it can be applied as a foliar spray for rapid nutrient delivery. Apply in early morning or evening to limit evaporation, and avoid spraying during bloom to protect flower quality.

Is Magnum Rose Food suitable for newly planted roses?

Let newly planted roses establish for several weeks before their first feeding. Once roots are established and new growth appears, introduce Magnum Rose Food at a reduced rate and increase to full strength gradually.

What are the signs of micronutrient deficiency in roses?

Common symptoms include interveinal chlorosis, distorted or small new growth, poor bloom coloration, and weak stems. The chelated micronutrient package in Magnum Rose Food is formulated to prevent and correct these issues.