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New to Rooted Leaf?
Pay shipping & handling. No subscription.
The quart is $0 with a valid trial code. You pay shipping and handling and any sales tax. Shipping and handling is the carrier rate plus packing supplies and a small handling charge. You see both at checkout before you pay.
$24.97 quart value
New customers only. One quart per person, household, business and address. While the 250 promotional quarts last.
Name, email, phone and shipping address.
We check your email, phone number and shipping address against orders placed directly with Rooted Leaf. Some claims are checked by a person before we approve them. If approved, you get a single-use link for one quart of Cryo Sil.
The quart is $0 with a valid trial code. You pay shipping and handling and any sales tax. Shipping and handling is the carrier rate plus packing supplies and a small handling charge. You see both at checkout before you pay. Add anything else you like at regular price. No subscription.
One quart per person, household, business and shipping address. Buying Rooted Leaf at a retail store does not count as a direct order. Growing commercially does not by itself make you ineligible. Some claims are checked by a person before we approve them. We may cancel duplicate, ineligible or abusive orders before shipment. If we cancel an order, we refund everything you paid for it, including shipping, handling and tax.
Already a customer? Scroll to the end of the page. There is a note for you.
Free Cryo Sil quart for new customers
Tell us where to send it. We check that you're new, then send you a single-use link for one quart.
The claim form needs JavaScript to check your details. Turn it on and reload this page, or write to info@rootedleaf.com and we will help you claim.
Silicon
Potassium
CarbonCryo Sil
Some silicon products carry protect-from-freezing storage instructions. That turns a bottle into logistics:
Which day it ships.
How long it sits on the porch.
Which shelf stays warm enough.
Cryo Sil was built for a different winter experience.
Could be silicate falling out. Dissolved silica tops out around 100 ppm as SiO2. Past that it links up and drops out of solution, and calcium and magnesium can bind silicate into insoluble solids.
For any silicate, dilute it in water and mix well before adding cal-mag. Follow the Cryo Sil label for rate and mixing.
It starts dissolved. Plants take up silicon as soluble silicic acid. It moves with water through the xylem to stems and leaves, and as that water is lost it can deposit as hydrated amorphous silica in epidermal and cell-wall-associated structures. It does not replace the wall.
That is general plant science, not a product result.
Yes. The quart is $0 with a valid trial code. You pay shipping and handling and any sales tax. Shipping and handling is the carrier rate plus packing supplies and a small handling charge. You see both at checkout before you pay. No subscription.
The quart is $0 with a valid trial code. You pay shipping and handling and any sales tax. Shipping and handling is the carrier rate plus packing supplies and a small handling charge. You see both at checkout before you pay.
Because trying it is more convincing than reading about it. The quart is how we introduce ourselves. If Cryo Sil earns a place in your grow, we hope you order again. That is the plan, all of it.
No. No subscription, nothing recurring. One quart, one checkout.
New customers only: no previous order placed directly with Rooted Leaf by you or at your shipping address. Buying Rooted Leaf at a retail store does not count. Existing wholesale, distributor and commercial accounts are not eligible. Growing commercially does not by itself make you ineligible. We check your email, phone number and shipping address against our direct order history. Some claims are checked by a person before we approve them.
Yes, if you meet the other trial terms. Buying Rooted Leaf at a retail store does not count as a direct order. Existing wholesale, distributor and commercial accounts are not eligible. Growing commercially does not by itself make you ineligible.
Both. One quart per person, household, business and shipping address.
Yes. Your valid trial code makes one quart $0. Anything else in the cart is at regular price. No other discount codes or Cryo Sil promotions can be used on the same order.
This offer ships within the 50 states and Washington, D.C.. We do not ship this offer to U.S. territories or to APO, FPO or DPO addresses.
Opens November 11, 2026, at 3:00 p.m. Pacific. Ends January 10, 2027, at 11:59 p.m. Pacific, or when 250 promotional quarts are claimed, whichever comes first. We may stop issuing new links early. A link we already issued works until it expires.
Your link works once. It expires 14 days after we issue it, or when the offer ends, whichever comes first. We may stop issuing new links early. A link we already issued works until it expires.
Some silicon products carry protect-from-freezing storage instructions. Cryo Sil was built for a different winter experience.
If your quart arrives cold, let it come to room temperature and look at it. If anything seems off, send us a photo and the lot number from the bottle and we will sort it out.
Cryo Sil is 0-0-1.5. The label also declares 4% soluble Si from potassium silicate and 9% carbon. It is derived from potassium silicate and a safflower and hibiscus ferment.
At the root or as a foliar, following the current label. A quick-start card ships in the box and points to a short mixing video.
For any silicate, dilute it in water and mix well before adding cal-mag. Follow the Cryo Sil label for rate and mixing.
This offer is funded specifically to put Cryo Sil into new hands. You're already part of the Rooted Leaf family. If you know a grower who has never ordered from us, this is the page to send them.
We may cancel duplicate, ineligible or abusive orders before shipment. If we cancel your order, we refund everything you paid for it, including shipping, handling and tax. If you think we got it wrong, write to info@rootedleaf.com and a person will look.
You may get our usual review emails about two months after shipping. A review is optional and does not change your order. If you write one, please say you received the quart free. We welcome honest reviews, positive or negative.
A quart is a sample at your scale. Tell us about the facility and we will help you make the trial useful.
Crop, cultivation area or facility size, system and current silica product are optional fields in the claim form. Skip them and your claim goes through the same way.
This offer is funded specifically to put Cryo Sil into new hands. You're already part of the Rooted Leaf family. If you know a grower who has never ordered from us, this is the page to send them.
