Premier PRO-MIX Premium Garden Mix with MYCOACTIVE | 1cu ft - Loose Fill

High Peat Humus Garden Mix for Perennials and Shrubs, 1cu ft

Perennials and flowering shrubs stay in the same soil for years rather than a single season, so the planting mix needs a stronger structural foundation than an annual container blend. Premier PRO-MIX Premium Garden Mix with MYCOACTIVE is formulated with a high percentage of peat humus alongside Canadian sphagnum peat moss, limestone, and Mycorrhizae, with a slow-release fertilizer that feeds for up to nine months.

This 1cu ft loose fill bag is sized for a single bed or a handful of perennials and flowering shrubs, letting growers try the formula before scaling up.

Key Features & Benefits

• High Peat Humus Percentage — gives perennials and flowering shrubs a stronger structural foundation than a standard annual mix.
• 9-Month Slow-Release Fertilizer — extends the time between fertilizer applications through a long establishment period.
• Mycorrhizae Included — supports root development as woody and perennial plants settle into the new bed or container.
• Canadian Sphagnum Peat Moss Base — provides consistent water retention across the planting.
• Limestone Amendment — helps set a stable pH suited to perennial and shrub root systems.

Who Should Use Premier PRO-MIX Premium Garden Mix with MYCOACTIVE

This mix fits gardeners planting perennials, flowering shrubs, or outdoor vegetables who want a longer-lasting structural mix with extended-release fertilizer built in, rather than a mix formulated for a single annual season.

About Premier PRO-MIX

Premier Tech introduced the PRO-MIX brand in 1968, building on a peat-substrate business it has run since 1923. Premium Garden Mix draws on the company's own peat bogs and its biotechnology lab, which produces the mycorrhizal inoculant blended into the formula.

Frequently Asked Questions

What plants is this mix ideal for?

It's formulated for perennials and flowering shrubs specifically, though it's also suitable for outdoor plants and vegetables. The high peat humus content is aimed at plantings that stay in the same soil for multiple seasons.

How long does the fertilizer feed?

It contains a slow-release fertilizer that feeds for up to nine months from planting, extending the time between fertilizer applications during establishment. Long-term plantings will need a follow-up feeding program after that window.

What makes this a 'premium' mix compared to a standard potting mix?

The high peat humus percentage is formulated to give perennials and shrubs a stronger structural foundation for long-term root development. That's a different profile than a general-purpose annual container mix.

Does it include mycorrhizae?

Yes, Mycorrhizae is blended into the mix to support root development as perennials and shrubs establish. No separate inoculation step is needed at planting.

What size bags are available?

This Garden Mix is available in 1cu ft and 2cu ft loose fill bags. Growers can size the purchase to a single bed or a larger planting project.