Is Superthrive a fertilizer?

Only barely. Its NPK is 0.5-0-0, so it is a vitamin and kelp supplement. Use it alongside a complete fertilizer for actual nutrition.

How much do I use per gallon?

The label directs a very small amount, roughly a quarter teaspoon per gallon of water. Follow the bottle directions and do not overdose.

Does it really reduce transplant shock?

Many growers report faster recovery after transplanting, but the evidence for vitamin B1 itself is thin. Results vary by plant and conditions.

Can I use it in hydroponics?

Yes. It is marketed for hydroponic use and mixes into reservoir water. Keep the dose low and watch for residue in the system.

Is $47.59 a good price for 4 oz?

That is high for this size. The 4 oz bottle commonly sells for much less, so check the per-ounce price at other stores before buying.

Vitamin B1 and kelp extract in water, which makes up about 99.5% of the bottle. It has a vinegar-like smell.

Where is the Superthrive Vitamin cheapest?

At Walmart, for $47.59, as of our latest check.

What do buyers say about the Superthrive Vitamin?

Rated 4.7 out of 5 from 1,300 ratings.

Where can I buy the Superthrive Vitamin?

3 stores we checked sell it, including Walmart, Ferry-Morse, HTG Supply.

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Superthrive Vitamin

Best price now

$47.59at WalmartObserved at 10:33 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

Superthrive Vitamin

Best price now

$47.59at WalmartObserved at 10:33 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

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Our take on the Superthrive Vitamin

Superthrive is a liquid plant vitamin concentrate built around vitamin B1 and kelp, sold in a 4 oz bottle that mixes into water for soil or hydroponic growing. Its label NPK is only 0.5-0-0, so it is a supplement rather than a complete fertilizer. The maker claims it reduces transplant shock and works for up to 8 weeks per application. At $47.59 at Walmart as of November 6, 2026, the 4 oz bottle is priced well above what this size normally sells for, so compare the per-ounce cost before buying.

Best forTransplanting seedlings and bare-root plantsHydroponic growers adding a B1 and kelp supplementReviving stressed or root-damaged plantsGrowers who want a concentrated liquid they dilute themselves

Pros

Very concentrated: a few drops per gallon go a long way
Vitamin B1 plus kelp is a popular combo for transplanting
Works in soil and hydroponic systems
Long-standing brand with decades of use among growers
Small 4 oz bottle stores easily and lasts a long time

Cons

NPK of 0.5-0-0 means it cannot feed a plant on its own
Strong vinegar-like smell
Can leave a crusty residue on soil or mixing containers
4 oz at $47.59 is far above typical pricing for this size
Little controlled evidence that vitamin B1 reduces transplant shock

Superthrive Vitamin prices at every store

WalmartNew
In stock
$47.59Observed at 10:33 PM
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Ferry-MorseNew
In stock
$77.49Observed at 10:33 PM
Visit Ferry-Morse

Also available at

HTG SupplyCheck price at HTG Supply

Superthrive Vitamin price history

Lowest price we've seen: $47.59 on Nov 7 at Walmart. Tracked across 3 stores since Nov 7.

What reviewers say

4.7 / 51,300 ratings

With 4.7 out of 5 from about 1,300 ratings, buyers mostly report good results on transplants and stressed plants and like how far a small bottle stretches. Complaints center on the vinegar smell, residue and the price of the small bottle.

What people mention

Transplant shockPraisedBuyers say plants perk up faster after repotting or bare-root planting.
ConcentrationPraisedOwners note that a few drops per gallon means one bottle lasts many seasons.
SmellCriticisedReviewers describe a sharp vinegar-like odor while mixing and after applying.
ResidueCriticisedSome report a crusty buildup on soil surface or in mixing containers.
ValueMixedLong-time users like the results but question the price of the 4 oz bottle.
Fertilizer roleMixedGrowers point out the near-zero NPK means it must be paired with a real fertilizer.

Specifications

NPK Ratio: 0.5-0-0
Type: Vitamin Solution
Primary Use: Fertilizer
Use: Hydroponics
Soil Type: All
Form: Liquid
Material: Mineral
Quantity

Questions and answers

Is Superthrive a fertilizer?: Only barely. Its NPK is 0.5-0-0, so it is a vitamin and kelp supplement. Use it alongside a complete fertilizer for actual nutrition.
How much do I use per gallon?: The label directs a very small amount, roughly a quarter teaspoon per gallon of water. Follow the bottle directions and do not overdose.
Does it really reduce transplant shock?: Many growers report faster recovery after transplanting, but the evidence for vitamin B1 itself is thin. Results vary by plant and conditions.
Can I use it in hydroponics?: Yes. It is marketed for hydroponic use and mixes into reservoir water. Keep the dose low and watch for residue in the system.
Is $47.59 a good price for 4 oz?: That is high for this size. The 4 oz bottle commonly sells for much less, so check the per-ounce price at other stores before buying.
What is in it?: Vitamin B1 and kelp extract in water, which makes up about 99.5% of the bottle. It has a vinegar-like smell.
Where is the Superthrive Vitamin cheapest?: At Walmart, for $47.59, as of our latest check.
What do buyers say about the Superthrive Vitamin?: Rated 4.7 out of 5 from 1,300 ratings.
Where can I buy the Superthrive Vitamin?: 3 stores we checked sell it, including Walmart, Ferry-Morse, HTG Supply.

Stores we've priced the Superthrive Vitamin at

Walmart deals and prices

1

Size

4 oz

Item Volume

4 FL OZ

Item Weight

4.64 oz

Coverage Area

2 sq ft

Dimensions

1.25"x8"x5" (Package Dimensions)

Effect Duration

Up to 8 Weeks

Effect Highlights

Reduces transplant shock

Effect Speed

Fast-Release

Scent

Vinegar-y

Texture

Crusty

Active Ingredients

Vitamin B1

Ingredients

Kelp, Vitamin Solution

Inactive Ingredients

Water 99 1/2%

Container Size

4 oz

Container Type

Bottle

Packaging Size

4 oz