Plant Success Great White Premium Mycorrhizae 4 oz Review

A 4 ounce water-soluble mycorrhizae powder with beneficial bacteria and Trichoderma for root-zone mixes and transplant routines.

Seller pricing varies Updated May 20, 2026

Bottom line

Plant Success Great White Premium Mycorrhizae gives pot-up and transplant supplies a compact water-soluble root-zone powder.

Plant Success Great White Premium Mycorrhizae 4 ounce tub

What this review covers

This tub fits gardeners who want a small mycorrhizae powder beside seed trays, cutting supplies, potting mix, and watering tools.

The upside

  • The 4 ounce tub stores easily near pot-up and transplant supplies.
  • Water-soluble powder fits watering cans, seed treatments, cuttings, soil, coco, and hydroponic setups.
  • The product source lists mycorrhizal fungi, beneficial bacteria, and Trichoderma in the formula.

The tradeoffs

  • The powder works smoothly when the label, scoop, and water amount stay visible at the bench.
  • The tub should stay closed and dry between uses.

Fit and feel

Good match:

Plant Success Great White Premium Mycorrhizae fits gardeners who want a compact powder for pot-up work, transplant watering, cuttings, and seed-starting shelf care.

What to know:

Use the label for every amount and application. Keep the tub dry and closed between root-zone sessions.

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Full review

A small tub for the root-care shelf

Plant Success Great White Premium Mycorrhizae is a 4 ounce water-soluble powder for root-zone mixes. The product source lists mycorrhizal fungi, beneficial bacteria, and Trichoderma, giving the tub a clear place beside transplant supplies, cutting tools, and seed-starting media.

The size feels easy to store near a potting bench. Keep it with a clean scoop, a small measuring cup, and the watering can used for tray and transplant work.

Use it where roots are part of the task

Great White fits root-focused routines because it can be used with seeds, cuttings, soil, coco, hydroponic setups, and watering-can mixes. That gives it a useful place during seed-starting, pot-up, and transplant days.

The key habit is simple. Read the label, measure the amount for the current task, and place the product where roots and moisture will meet.

Keep the powder dry between sessions

Powder tubs stay easier to use when the lid closes fully and the scoop stays clean. A small bin or shelf tray can keep the tub, scoop, labels, and measuring pieces together.

That storage habit matters during busy planting weeks, when several seedling groups may move through the bench in one day.

Good match

Plant Success Great White Premium Mycorrhizae fits gardeners who want a compact powder for pot-up work, transplant watering, cuttings, and seed-starting shelf care.

What to know

Use the label for every amount and application. Keep the tub dry and closed between root-zone sessions.