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The Harvest Company 16 qt. (0.5 cu. ft.) Coarse and Chunky Grade Vermiculite Soil Amendment (Packs)

SKU: 43725
Sale price$14.99
Packs: 1-Pack (VER16)

 

Improve Moisture Retention and Aeration for Healthier Plant Growth

The Harvest Company 0.5 cubic foot coarse and chunky vermiculite is a natural soil amendment designed to improve moisture retention, aeration, and nutrient availability in potting mixes. This vermiculite helps create an ideal growing environment by delivering essential nutrients directly to plant roots.

Vermiculite #3 naturally attracts and holds positively charged ions such as potassium, magnesium, calcium, and ammonium, slowly releasing these nutrients to support strong root development, improved growth rates, and higher yields.

This coarse-grade vermiculite is ideal for container gardening, raised beds, greenhouse growing, and hydroponic systems, providing a balanced air-to-water ratio for optimal plant health.

Specification Details
Size 0.5 Cu. Ft.
Grade Coarse and Chunky
Application Soil amendment, potting mix
Features Biodegradable, eco-friendly

Features

  • 100% natural and environmentally friendly vermiculite
  • Improves moisture retention and soil aeration
  • Holds and releases essential nutrients for plant growth
  • Provides excellent cation exchange capacity (CEC)
  • Suitable for a wide range of growing media and applications
  • Sterile, odorless, and asbestos-free

Enhances Soil Structure and Root Development

The Harvest Company coarse vermiculite improves the physical structure of soil and soilless media.

  • Increases water retention without waterlogging
  • Improves airflow and root oxygenation
  • Supports strong and healthy root systems

Improves Nutrient Availability

This vermiculite helps deliver nutrients more efficiently to plant roots.

  • Attracts and holds essential nutrients
  • Slowly releases nutrients for consistent plant feeding
  • Enhances overall plant growth and yield

Ideal for Multiple Growing Applications

The Harvest Company vermiculite is suitable for a variety of gardening methods.

  • Container gardening and potting mixes
  • Raised beds and square foot gardening
  • Greenhouse propagation and growing
  • Hydroponic drip systems
  • Soil conditioning and composting

Reliable and Sustainable Growing Solution

The Harvest Company 0.5 cu. ft. coarse vermiculite offers a dependable and eco-friendly solution for improving growing media. Its natural composition and high-performance properties make it an essential component for gardeners and growers seeking healthier plants and better results.

Disclaimer: Packaging may vary due to brand updates and inventory transitions. You’ll receive the same high-quality gardening product. Formally known as Viagrow.

Fast Shipping on All Orders

Bulk soil, amendments, and mulch delivered straight to your door.

Real-Person Grower Support

Expert technical guidance from real people who know how to grow.

Professional-Grade Supplies

Commercial-quality products designed specifically for the dedicated home gardener.

  • 5 stars: 12 (86%)
  • 4 stars: 2 (14%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
c
claudialaaf6_6687
New and love

This is the first time I have tried this product and I am using it for my Monstera plants. It is winter right now so I have not repotted many plants, however I used it for my Monstera Albo and it is already growing two new leaves! I cannot wait to see how it performs in the summer and spring when I add it to more of my repotting projects. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

j
jocelynbee_664
Large granules. Does what it’s designed to do !

Rather large granules, which was surprising. I like that because it is less messy. It works just like any other vermiculite. I use it to store bulbs for the winter and it is perfect for that. Minus one star for the plastic packaging. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

s
shelbster_h_4372
Viagrow Coarse and Chunky Grade Vermiculite

I was gifted this product by Influenster and Viagrow in exchange for my honest opinion. I�m so excited for spring when I can put this in my flowerbeds! Vermiculite essentially acts as a sponge to help retain moisture in your soil. It also retains minerals to help your plants grow. Bonus: it�s a pretty sparkly gold color. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

j
jennyasha_1309
THC is key

THC-Viagrow works so well in my potted plants! My cactus and succulents love the chunky texture because it allows for good water drainage. So glad I was able to try THC-Viagrow complimentary for my opinion. I�m really impressed with how well it kept my plants' nutrients in and kept them insulated during these colder desert months. I will buy this again. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

a
amyc462_5616
Reliable and well-made

I�m really impressed with the THC-Viagrow 16 qt. Coarse and Chunky Grade Vermiculite. The consistency is excellent�nice chunky pieces that don�t break down easily. It�s very scoopable and easy to mix into soil or growing mediums without clumping. The appearance is clean and uniform, which makes it feel like a high-quality product. The weight is light, as vermiculite should be, making handling and storage easy. Best of all, there�s very minimal dust, which I truly appreciate. Overall a reliable and well-made vermiculite that performs exactly as expected. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

t
terirose22_3759
Excellent additive for my plants!

I�m new to using vermiculite, but after a little research I�m very hopeful that this will improve my potted plants and, once the weather gets warmer, my container boxes. The instructions were pretty clear for new users and it worked into the soil easily once it was wet. The thin bag was difficult to maneuver, however, especially with gardening gloves and only one free hand. It would be nice if it came in a sealable bag so I didn�t have to worry about spilling the remaining product. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

m
marshap_542
Easy to use

I used the vermiculite when transplanting my aloe vera plant. I mixed the vermiculite into the soil to aid in aeration and water retention. The soil is draining correctly and my plant is thriving, happy, and healthy. I will be using it again and I do recommend it. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

v
vs17_7948
Easy product to enhance garden

I sprinkled this product all over my raised beds including my strawberries and some vegetables. I also sprinkled it over tulips that I have growing in the ground and I�m hoping that it provides the right amount of moisture to make my plants look really nice next spring. The product was super easy to use and even though I didn�t get around to using it for a month, it stayed fresh in storage. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

p
pixiesreviews_6148
Great helper to keep soil drained and not soggy

When starting seeds there�s nothing worse than poor drainage and sometimes soil needs a little help. This bag of Viagrow Vermiculite is a perfect way to help with drainage so your newly planted seeds do not sit in water too long and fail to sprout. This will always be a part of my gardening routine. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

a
anng9_7868
My hubby loves

This Viagrow vermiculite is great for indoor plant beds or planters. The chunky and coarse texture is good for aeration and moisture retention. It helps deliver essential nutrients directly to plant roots. It keeps the soil moist so there is less watering required and helps promote stronger root development and healthier growth. My husband loves this product and says it�s exactly what he needed to start vegetables indoors during the winter. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

e
ericb38_3577
Plants love it!!

My wife is a big lover of potted plants, both indoor and outdoor, and this vermiculite is incredible. It�s our first time hearing about and actually using vermiculite on our plants. We wondered how it would work, but we have noticed that the moisture retention is outstanding and the plants seem to enjoy it because they are growing even more beautifully. It is super lightweight and mixes really well with potting soil, giving it enough breathing room in between. A little goes a long way since it expands once it gets wet. We will be adding it to our plants from now on. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

d
danielac573_8169
Great quality vermiculite—perfect texture for soil

This Viagrow Coarse & Chunky Vermiculite is exactly what I needed for improving aeration and moisture retention in my potting mixes. The larger pieces make a noticeable difference compared to finer vermiculite. Plants drain better, roots breathe easier, and the soil stays evenly moist without compacting. The bag is generously filled, clean, and low-dust, and the product mixes beautifully with soil once lightly dampened. Excellent value for anyone repotting houseplants, starting seeds, or improving garden beds. I�d definitely purchase this again. It arrived packaged well in a sturdy plastic bag and I�m very satisfied. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

j
jbones84_1084
It’s nice soft and organic

Pretty good product. The wood chips absorb rain very well, helping keep moisture around plants. The texture is soft, long-lasting, and organic, making it a great option as it naturally breaks down over time. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]

l
ljh3822_3379
Easy to work with

This medium was easy to add to the mix I made while repotting some plants this week. I like that the vermiculite is lightweight while still improving drainage, retaining nutrients, and absorbing excess water. It is pH neutral so it won�t significantly affect soil acidity. The vermiculite promotes aeration and allows roots to grow freely, creating optimal growing conditions. I generally prefer finer vermiculite, but I am very happy with this coarse grade and would definitely repurchase it. I plan on using the remainder for my larger indoor plants when I repot them soon. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]