Sun Gro Sunshine Advanced Mix #4 | 3cu ft - Compressed - OMRI Listed

Myco-Active OMRI Listed Mix for Indoor Growing, 3cu ft

Indoor growers balancing moisture retention against root aeration often have to choose one or the other, since a mix built to hold water tends to drain slowly and one built to drain fast dries out too soon. Sunshine Advanced Mix #4 is formulated as a Myco-active blend that retains moisture while still improving root aeration and drainage, aimed specifically at indoor growing setups.

This 3cu ft compressed bag is OMRI Listed for organic gardening and includes RESiLIENCE, a silicon-enriched additive included across Sun Gro's professional line.

Key Features & Benefits

• Myco-Active Formula — supports beneficial root-zone associations.
• Balanced Moisture & Aeration — retains water while still draining and aerating well.
• OMRI Listed — certified for organic gardening.
• Includes RESiLIENCE — a silicon-enriched additive found across Sun Gro's professional mix formulas.

Who Should Use Sunshine Advanced Mix #4

Indoor growers who want a Myco-active, OMRI Listed mix that balances moisture retention with root aeration will find Sunshine Advanced Mix #4 suited to that setup.

About Sun Gro Horticulture

Sun Gro Horticulture's Sunshine Advanced line pairs OMRI Listed organic certification with Myco-active formulas, built for indoor growing operations that want both compliance and root-zone biology in one bag.

Frequently Asked Questions

Is Sunshine Advanced Mix #4 OMRI Listed?

Yes, it's OMRI Listed and approved for organic gardening. That certification applies to this 3cu ft compressed format.

What does Myco-active mean for this mix?

The mix retains moisture while still providing improved root aeration and drainage, rather than favoring one property over the other. That balance is the core difference from a straight moisture-retention or fast-drainage formula.

Is this mix suited to indoor growing?

Yes, it's recommended specifically for indoor growing setups rather than outdoor beds or general nursery production. The moisture-and-aeration balance is tuned for the more controlled conditions typical indoors.

What does RESiLIENCE do in this mix?

It's a silicon-enriched additive included across Sun Gro's professional line, intended to support plant structure during production. It's included alongside the mix's core Myco-active formulation rather than replacing it.