Hydrofarm Black & White Grow Bag, 7 gal (16 packs of 25)

A Two-Tone Poly Grow Bag with a Write-On Surface, 7 Gal

Tracking which container holds which variety, feeding schedule, or planting date gets difficult fast once a grow room or greenhouse has more than a handful of containers, especially with opaque black pots that give growers nowhere to write. Hydrofarm's black and white grow bag solves that with a white outer surface that takes pen or marker directly, paired with black on the inside to block light from the root zone and reduce algae growth in the growing media.

This 7 gallon bag ships in 16 packs of 25, sized for large potted plants and shrubs, with pre-punched holes that promote drainage without needing to cut the bag yourself.

Key Features & Benefits

• White outer surface — takes pen or marker directly for labeling variety, date, or feeding notes
• Black inner surface — blocks light from reaching the root zone and growing media, helping reduce algae growth
• Pre-punched drainage holes — promote drainage without needing to cut the bag yourself
• Sized for large potted plants and shrubs — a 7 gallon capacity matched to that use case
• Sold in 16 packs of 25 — for growers outfitting a full bench, row, or production run at once

Who Should Use This Grow Bag

Growers who need an economical, labelable container for large potted plants and shrubs, and who want to track plant identity or feeding notes directly on the container, will benefit from this grow bag.

About Hydrofarm

Hydrofarm has manufactured cultivation equipment since 1977, when founder Stuart Dvorin started the company as Applied Hydroponics; the company has operated out of Petaluma, California, since 1994, supplying growing containers, propagation hardware, and hydroponic equipment to commercial and home growers.

Frequently Asked Questions

What size is this grow bag?

This listing is for the 7 gallon Hydrofarm black and white grow bag, sized for large potted plants and shrubs. It's ready to fill directly from the pack.

How many bags come in this listing?

This listing ships in 16 packs of 25. That packaging is intended for growers outfitting a full bench, row, or production run rather than buying individual bags.

Why is the bag two different colors?

The white outer surface takes pen or marker directly for labeling, while the black inner surface blocks light from the root zone and growing media. That light-blocking helps reduce algae growth compared to a clear or light-colored bag.

Does this bag have drainage?

Yes, it has pre-punched drainage holes. It's ready to fill and use without cutting your own holes into the poly material.

What growing media works in this bag?

It's built to hold standard soil or soilless potting mixes, coco coir, or similar loose growing media. That makes it a general-purpose alternative to a rigid plastic pot.

How do I label this bag?

Write directly on the white outer surface with a permanent marker to note plant variety, planting date, or feeding schedule. The white surface is designed specifically to take marker or pen legibly.