The Harvest Company 1 cu. ft. Horticultural Vermiculite Natural Soil Amendment
Improve Plant Growth with Vermiculite #3 Soil Amendment
The Harvest Company vermiculite #3 is a natural soil amendment designed to improve moisture retention, aeration, and nutrient availability in potting mixes and growing media. It helps deliver essential nutrients directly to plant roots, supporting stronger root development, faster growth, and higher yields.
This versatile growing medium is ideal for both beginners and experienced growers.
Enhance Nutrient Retention and Soil Performance
The Harvest Company vermiculite has a high cation exchange capacity (CEC), allowing it to attract and hold essential nutrients such as potassium, magnesium, calcium, and ammonium. These nutrients are slowly released to plant roots for consistent feeding.
It also supports beneficial microbial activity, improves wettability, and helps maintain pH stability in soilless growing environments.
Specifications:
| Feature | Details |
|---|---|
| Product Type | Horticultural vermiculite #3 |
| Sizes Available | 4 qt, 8 qt, 1.5 cu ft, 4 cu ft |
| Composition | 100% natural vermiculite |
| Properties | Moisture retention, aeration, nutrient exchange |
| Safety | Asbestos-free, sterile, odorless |
| Packaging | Biodegradable bag |
Features:
- Improves moisture retention and reduces watering frequency
- Enhances aeration and prevents soil compaction
- Supports strong root development and plant growth
- Retains and slowly releases essential nutrients
- High cation exchange capacity for better nutrient availability
- Sterile, odorless, and resistant to mold and decay
- Maintains stable pH in growing media
- Suitable for indoor, outdoor, and hydroponic growing
- Environmentally friendly and biodegradable packaging
Ideal for Seed Starting, Soil Mixing, and Hydroponics
This vermiculite is ideal for seed starting, propagation, container gardening, square foot gardening, raised beds, greenhouse growing, and hydroponic drip systems. It can be mixed with peat moss, compost, bark, perlite, coconut coir, worm castings, and other growing media to create a customized soil blend.
For a balanced soilless mix, combine:
- 30% The Harvest Company Viagrow vermiculite (VER4)
- 30% The Harvest Company Viagrow perlite (VPER4)
- 40% The Harvest Company Viagrow coconut coir (VCCB5)
Safe, Reliable, and High-Performance Growing Medium
The Harvest Company vermiculite is mined, processed, and tested to ensure it is asbestos-free, clean, and safe for gardening use. Its stable structure and nutrient-holding capacity make it a reliable choice for improving plant health across a wide range of growing environments.
Disclaimer: Packaging may vary due to brand updates and inventory transitions. You’ll receive the same high-quality gardening product. Formally known as Viagrow.
We are committed to providing our customers the fastest, most affordable shipping options possible.
Shipping Methods
We offer these methods for shipping your orders from theharvestco.com
Ground — 3 to 5 shipping days
Freight — 3 to 10 business days
Certain products may require additional days to process prior to shipping. All shipping methods apply to business days, not weekends or holidays. Not all items are available for all shipping methods. We sometimes offer free shipping for specific shipping methods in select categories, or free shipping site wide.
Our shipping fees are calculated by the weight, dimensions, destination, and shipping method. We reserve the right to notify you of any additional shipping charges necessary to deliver your order. Our web site attempts to estimate calculated shipping fees and sometimes it may not be accurate for a multitude of reasons: rural delivery locations, shipment requires multiple pallets, delivery to an island, etc.
** If your order requires additional shipping charges you will be immediately notified of additional shipping charges.
Where do we ship to?
We ship within the contiguous 48 states, as well as to *Alaska and *Hawaii. We do not ship outside of the United States.
*Promotions and/or discounts for shipping do not apply to Alaska or Hawaii. We do not offer local pickup.
Missing, Lost and Stolen Packages
theharvestco.com is not responsible for any missing, lost, or stolen items.
Discrete Shipping on Request
Privacy for many of our customers is of the greatest importance. We get it. You can request your packages shipped in unmarked boxes without any identifying markings. Our pallet orders can be wrapped in black for your privacy.
Shipping Methods & Transit Times
Most orders are processed within 3-5 business days. This does not include transit times. This estimate may vary depending on stock availability, order size, special handling requirements, and special order status. Transit times vary per carrier, shipment size, and destination.
Customer orders may be fulfilled directly by the manufacturer or distributor to reduce cost and shipping time. In some cases we may choose to ship an order from multiple locations. Our customers are NOT charged for any additional shipping fees incurred if we decide to send your order in multiple packages.
Freight Deposits & Estimates
We require our customers to submit a Refundable Freight Deposit prior to receiving a freight estimate. We strive to find the quickest, most affordable freight option for our customers. Freight estimates are calculated and emailed to our customers within 24 hours of a new order submission. To approve your freight estimate, please respond to your Freight Estimate email.
Freight Shipping
Freight shipments are delivered by scheduled appointment only. Our freight carrier will contact you directly to arrange a delivery day and time. You must respond to the freight carrier within 24 hours. If the freight carrier can not confirm a delivery appointment within 24 hours of first contact, customers are responsible for all shipping fees and restocking fees.
Oversized items will be shipped on pallets (i.e., large orders, trays, soil, reflectors, dehumidifiers, etc.). Freight shipments are delivered by scheduled appointments. Customers will need to inspect for damage incurred via transit. DO NOT accept the shipment if there is any damage. If your freight shipment arrives damaged, contact us immediately.
Note: Your signature on the freight bill confirms that you have received your shipment/order in acceptable condition. Once signed, there is not reimbursement of freight charges, product costs or any other charges incurred by you from The Harvest Company.
We promise to be your trusted partner for cultivation by delivering the advice, service and convenience you deserve — all at competitive prices. If you are not fully satisfied with your purchase, let us help you with a replacement, return or repair.
Unopened Return Items
Unopened products can be returned within 7 days of customer receipt of shipment. A refund will be issued (less shipping, 3% credit card processing fee, and 20% restocking fee) once the product is received at the designated warehouse and inspected. Shipping fees are non-refundable.
Returns must be authorized by The Harvest Company. Do not return items without the authorization from TheHarvestCo.com. Unauthorized returns will be returned to sender. After requesting a return by phone, email or our website, you will receive an email with the address of the warehouse the item(s) should be shipped back to and instructions for the return. Items acquired through a "FREE" promotion at TheHarvestCo.com cannot be refunded. Discounts based on quantity will be applied against any refunds, if the retained quantity falls below the minimum purchase required for the discount.
Return Requirements:
Products must be free of scratches, dents or cosmetic defects and must not have been used.
Products must be in new, resalable condition, and in the original, undamaged manufacturer’s packaging inside of a plain brown shipping box.
Return must include all informational brochures, installation guides, cords & accessories.
Original shipping fees are not refunded except due to a shipping error, shipping damage or manufacturer defect.
All sales are final on Discontinued and Closeout items, there will be no returns or exchanges on these products.
We require that all shipments be inspected immediately upon delivery. Damages and discrepancies must be reported to support@TheHarvestCo.com within 48 hours of receipt.
TheHarvestCo.com reserves the right to refuse a return for any item not in like-new condition. Returns will be refused if the manufacturer’s packaging is damaged or missing. The products and packaging must be protected with a plain brown shipping box.
Customers are responsible for restocking fees (20%), return shipping costs and the freight costs associated with sending the item(s) back to our warehouse in the same condition the shipment was delivered. Please purchase insurance for your return package with the carrier of your choice. TheHarvestCo.com is not responsible for damaged, lost, or stolen return items.
Online Return Instructions
To request a return, contact us by phone, email, or create a “Return Request” at TheHarvestCo.com. All returns must be authorized.
Merchandise must be in its original packaging and placed in a shipping box to prevent any damage to the original packaging.
Remove and/or cover any existing shipping labels, stickers, or other identifying marks on the shipping box from previous shipments. Use a black marker to cover any existing labels or bar codes.
Products are not always returned to the original shipping location. You must address the return package to the warehouse address we provide in your Return Authorization email.
Refunds are issued within 7-10 business days on most successful returns.
Defective Products
In the case a product is defective within 30 days of receiving the order, we will exchange the product for a new one, issue a credit, or issue a refund after we receive and inspect the product. Please immediately contact us by phone or email if you discover one of our products is not working properly.
Warranty Claims
In the case a product purchased at TheHarvestCo.com fails outside of the 30 day defective return period, but within the manufacturer's warranty period, The Harvest Company is happy to assist you with the claim process. Warranty claims are subject to the manufacturer's terms. You may receive a refund, replacement or repair at the manufacturer's discretion. No refunds after 90 days from delivery.
Order Cancellation
Once an order has physically shipped, partially or complete, it is considered fulfilled and will require a return subject to shipping and restocking fees, if applicable. Please contact TheHarvestCo.com via email or by phone as soon as possible. Your order is not considered canceled until you have been notified verbally, or by email, that we were successful in canceling the shipment from leaving our warehouse. All canceled orders are subject to a 3% credit card processing fee deducted from the refund. Special Order items are not eligible for cancelation.
Being in MN I couldn�t start using it until now. This stuff works really well. Not dusty unless super dry. The odor is not bad and I feel like it helps grow the plants a lot better! Do recommend. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
This stuff is the best if you're into any type of gardening, especially the THC type. It does exactly what it says and the price is great. It's just an all-around wonderful product for an even more wonderful price! 10 out of 10 would recommend. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
Viagrow Horticultural Vermiculite is lightweight and easy to mix into soil. I noticed it helped my plants retain moisture. The only reason I didn�t give it a five-star rating is that I wish the bag was resealable. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
The Viagrow Horticultural Vermiculite is lightweight, easy to mix, and does exactly what it should. It helped my soil hold moisture without getting soggy and improved overall plant health, especially for container plants and seedlings. Clean product, good quality, and a solid amount for the price. The only downside is that it can be a little dusty when pouring, but that�s typical with vermiculite. Overall a great soil amendment and I�d definitely buy it again. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
Really happy with this vermiculite! It�s lightweight, clean, and easy to mix into soil. It helps my plants hold moisture better and I�ve noticed they look healthier overall. Definitely a great addition to my gardening routine. The roots on my plants are very happy. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
I have very clay-like soil and I am using this to help the grass and other plants retain water during the dry months. I did not expect much, but I am very pleasantly surprised so far. My plants seem healthier and stronger. I will continue using this and have high hopes that it will help my plants get through the dry summer heat. The product itself is very fine and lightweight. I water it down after application to ensure it does not blow away. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
Great product to improve water and nutrient retention in plants. Very easy to use. Just add it to the soil and mix it in, which helps aerate the soil and keeps plants strong and healthy. I love that it�s lightweight since I have lots of plants all over the house as well as outside in pots. I will be adding this vermiculite to my potting soil to start new seeds, giving them a healthy head start before planting them outside. Flowers all season long�love it!! [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
As you can see, I love gardening. It�s my little sanctuary and I was very happy to receive this product. It was very easy to open and spread through the areas that needed some extra care. The bag is lightweight due to the consistency of the product�it�s almost like hollow sand. I haven�t used it long enough to see major results, but I have noticed my plants perking up already. Hoping for continued good results and I would purchase it again. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
This stuff makes it a little easier to care for your plants and keep them healthy. I mixed it in with the topsoil and it seems to help retain water more evenly during the dry winter months. When I�m done, I dump it into my garden. It�s lightweight, easy to handle, and doesn�t kick up much dust. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
Viagrow Horticultural Vermiculite is a lightweight soil amendment that improves moisture retention and nutrient availability for plants, making roots healthier and watering less frequent. I received it for free and used it in potting mixes. I�ve been trying to learn how to take care of my plants and I loved receiving this product. It has been a week since I tried it and my plant already looks bigger and more vibrant. Highly recommend! [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
Horticultural vermiculite improves soil aeration and water retention, making it a valuable amendment for many plants and potting mixes, although it can be dusty and may blow away in windy conditions. Vermicomposting is praised for creating nutrient-rich fertilizer but requires a waiting period before harvesting finished castings. Overall, this product is excellent for supporting plant growth and healthy development. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
I have never been a green thumb, so I was excited to try this. I chose the vermiculite because of what I read about its benefits in preventing overwatering and root rot, which are the most common issues I face. It works well so far and seems especially suitable for planters. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
This is a great product if you don�t mind taking the extra step of mixing your own soil. I swear I see a huge difference in the health of my plants. It holds water appropriately and my plants seem much healthier and better nourished. [INCENTIVIZED] [Received Free Product] [Originally posted on influenster.com]
