SKU: 29898356012

Seedling & Propagation Mix

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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

Seedling & Propagation MixOur Seedling and Propagation Mix is perfect for seed starting or propagating a stem or leaf cutting. It is designed to be much finer and moisture retentive than our other mixes and is compatible with all plant types. The components in this mix provide seeds and seedlings with an ideal physical structure ensuring adequate water retention, ideal oxygen flow, as well as excellent drainage. Note in the comparison image the material looks quite different

Our Seedling and Propagation Mix is perfect for seed starting or propagating a stem or leaf cutting. It is designed to be much finer and moisture retentive than our other mixes and is compatible with all plant types. The components in this mix provide seeds and seedlings with an ideal physical structure ensuring adequate water retention, ideal oxygen flow, as well as excellent drainage.

Note in the comparison image the material looks quite different when bagged dry vs. damp. We will try to dry most batches when we can so it keeps that more distinctive look, but if it all looks dark, rest assured it’s the same recipe and performs the exact same! It’s just bagged damp, right after mixing sometimes. 😊

Our core chunky & gritty mixes are built for more robust root systems, but this mix is compatible with all plant types that might need to be started from seed/cutting. Because it is more moisture retentive, you may see color variation bag-to-bag (we still mix and bag by hand!).

WHAT’S IN IT

  • Coconut Husks, Calcined Clay, Hardwood Biochar, Earthworm Castings

*Note: This mix also works well blended 50/50 (or less) into any of our other mixes for a finer, more water retentive hybrid mix. This mix on its own isn't designed for adult plants to live in long-term.

As a pre-release exclusive, please also be aware:

  • We are going to keep these discounted to solicit feedback from our community, like yourself!
  • We packed this baby with beneficial microbes, so you'll likely see a little bit of mycelium which will look like the beginning of mold in some cases. Definitely don't discard this "white gold" and just blend it all together if you see this and plant in the mix as-is!
  • We'd LOVE to hear via email, IG, or live chat what you think of the look, feel, and overall experience. Ultimately this should perform better side-by-side than any competitive seedling mix you have on hand!
  • We're starting with the Gallon (4 Quart) size, but are planning to introduce a 2 Quart smaller size before the end of the year.

Grow Happy (Baby) Plants!

Travis & Leah

Your Sol Soils Team!

-----------------------------

SEEDLING TIPS

Let me first say that seedlings are a really fun way to garden! It's not that complicated, and it is SO rewarding! Sometimes you'll run into issues you weren't expecting, so I'm dropping a few notables from my years of playing around with all sorts of soils, seed species, and growing setups:

-Biodegradable seedling cells don’t typically degrade fast enough to keep them in the cells for transplanting, so still plan to remove the root ball and plant in your desired transplant location when ready.

-Biodegradable seedling cells usually grow mold on the underside with a rich, damp seedling environment, so don’t be alarmed when you see that (using any brand).

-Not all seeds in a seed packet will germinate, so add at least a few seeds to each cell. Germination rates get worse year after year, so if you have old seeds it may take more to get some good seedlings.

-Using really small cells makes your life a little harder and might require transplanting before they're really ready.

-Without adequate air flow, seeds can suddenly get a disease that causes them to quickly wilt and die (Google: damping off).

-Cactus seedlings indoors can take a WILD amount of time to grow large enough to be ready for normal cactus soil and watering treatment.

Various plant types sprout differently:

  • Fast sprouting seeds: lettuce variations and most veggies
  • Slow sprouting seeds: many herbs like basil or cilantro
  • Perennial wildflowers as an example usually also need some help like “cold stratification” where you have them in a damp paper towel in a sealed container or ziplock bag in the fridge to get them to sprout
  • Some specific types of seeds need you to manually chip or break the outer-most shell to allow for growth to begin once planted (Lupine for example)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29898356012

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4.3 ★★★★★
Based on 15 reviews
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Product Reviews
R
Verified Purchase
Rodney Hahn
Birmingham, US
★★★★★ 5
Works like a champ!
Size: Full-size Truck, SUV
It works great! I had one fairly slow leak and 2 very slow leaks. 3 Tires. 2 were on my 94 Ford Ranger. I put a little more than 1/2 the packet in my fastest leaking tire (on the Ranger) and about 1/4 of the packet in the 2nd tire of the same vehicle. Lastly, I put the final 1/4 in a very slow leaking tire on my 2000 Ford F-150. All tires have stopped leaking!! I am delighted with the effectiveness of this product!!
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Reviewed in the United States on May 13, 2026
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Verified Purchase
Jim
Omaha, US
★★★★★ 4
Seems to have done a great job.
Size: Full-size Truck, SUV (2-pack)
One of our cars has suffered from rim leaks and was driving me nuts. Constantly being asked by my wife to top off the tires on her car. When I replaced a damaged rim I asked the tire shop to look for the source of the leaks. They said the "alloy" rims had started to corrode and did their best to get them to seal but warned me they would likely leak again. This spring when I removed her snow tires I found 3 of her 4 tires had gone completely flat in storage. The fourth was the new rim which was fine. I considered buying new rims that won't have this problem but wanted to wait until her times need to be replaced. The batteries in the TPMS sensors are getting very low so likely these will need to be replaced as well. I thought to try some sort of sealant. Most of the products I saw were not rated for automotive systems and offered warnings about risk to the TMPS sensors. This seemed to be the only product rated for my application and claimed it would not harm our car's sensors. So I gave it a shot. I ordered the SUV package that came with an injector and two 8-oz bottles. I put 4 oz in each tire per the instructions. Overall the process was easy except the valve core extractor broken on one of the tires. I had to pick up a replacement at a local auto parts store. Also, injecting the sealant creates a small amount of pressure in the tire that, if one doesn't release by drawing out the plunger, will burp a small amount of sealant onto the rims. Fairly easy to clean up with WARM water and easier to avoid after the first experience. Drove the car around at a variety of speeds for 10-15 minutes (had errands to run) and waited to see what happened. Great results. Weeks later and the tires still have the correct pressure. I am not sure how long this will last but hopefully for the remaining life of the tires at least. I took one star off for easy of use / easy to install because the valve core extractor is made of extremely cheap aluminum and I am sure others will have a poor experience with it. Be forewarned and consider buying one before you start jacking up your car and letting the air out of the tires only to find you break the tool on a sticky valve core and are unable to complete the job without a trip to the auto parts store. I'll update this review in about a year to report on the long-term outlook for this product.
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Reviewed in the United States on June 20, 2023
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Verified Purchase
Team Ohio
Carnegie, US
★★★★★ 5
It Works!
Size: Full-size Truck, SUV
When I bought my vehicle it didn't come with a spare. I knew what I was in for. I was on my way to an important meeting and as fate would have, the tire pressure indicator reported a flat. I imagined the worst but experienced the best! The directions said to let all the air out of tire and remove the valve stem core, it seemed like I was making a bad situation worse. Then it said to attach the tube to the stem and squeeze the contents into the tire. I thought "this is never going to work" the fluid seemed too watery to seal anything, but I followed instructions, I reinstalled the valve core and reinflated the tire, and it worked! I expected it to leak immediately, it didn't. It lasted all day and most of the next day until I could get the tire to the shop. They removed a nail and patched the hole, overall I'm very satisfied, I bought a replacement right away, just in case!
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Reviewed in the United States on May 20, 2026
T
Verified Purchase
Terry Justice
Louisville, US
★★★★★ 5
Better than the green goo
Size: Full-size Truck, SUV (2-pack)
Recently, while I was at work, I noticed that I had at some point run over a nail with my car. Normally, you'd take your car to the tire shop and let them plug the hole for you. Well, the only problem was that the nail decided that it was going to poke my tire where the sidewall meets the tread, and most shops will refuse to plug a tire when it's punctured there. Makes sense, it's a liability issue for them, so I can't blame them. That still leaves me with the problem of having a tire with a nail in it. So, I could either replace the tire with either a new or used tire, which is expensive or I can try using a sealant to try and get as many miles out of my tire as I can. In the past, I had tried using the green goo sealant on nail holes, and while it works to get you 15 miles down the road, that's about it. Now, while TireJect doesn't recommend using their product on punctures on the shoulder of the tire, I decided that I'd give it a try to see if it would work. And as of writing this review, it's been about 10 days since I put TireJect in my tire, and so far, it hasn't leaked any air, despite it not being meant for the shoulder. When money isn't so tight, I'll probably go ahead and replace the tire, especially since there's only about 4/32 tread depth left, but for the time being, I'll keep running it, and hopefully it keeps holding pressure properly like it has been. Now, as for how easy it is to use, the only tools you will need that aren't provided, is an air compressor to allow you to re-inflate the tire. The kit comes with everything else you will need, including a valve core removal tool and a syringe to add the sealant to your tire. To use this product, you will first need to carefully remove the valve core with the provided tool, careful not to lose the core, since it doesn't come with a replacement core. After that, thread the hose on the syringe on to your valve stem, and then carefully add the required amount of sealant to the syringe. If you accidentally spill some, wipe it off before it dries, so that it doesn't stain anything. From there, just push the goo into the tire with the plunger, adding more to the syringe as necessary. When you're all done, re-install the valve core into the valve stem snuggly, careful not to over-tighten, and air up the tire to the recommended PSI with your compressor. After all that is done, go take a short, slow drive to distribute the sealant, and then recheck your air pressure.
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Reviewed in the United States on July 29, 2025
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Verified Purchase
Tony Nowikowski
Grantham, US
★★★★★ 1
TPMS Compatability is a LIE
Size: Sedan, Crossover, Small Truck
2018 Subaru Impreza, with one tire with a slow leak (about 2 PSI a week) that I couldn't trace. I bought the "Full-Size Sedan, Small Truck, Crossover" kit (the 6 oz. pouch) based on my tire size, 225/40/18. After I removed the valve core, attached the dispensing hose and opened the cap, the product would not flow into the tire. I squeezed the pouch, but that only made the product leak out around the valve stem onto the wheel and driveway. I tried rotating the tire so the valve stem was at the top, and and also at the bottom. I even took the wheel off so I could get a fully vertical flow. Nothing worked. I finally gave up after only about half the product was dispensed, and I do think most of it went somewhere other than in the tire. I reinstalled the valve core, remounted the wheel, plugged in my little lighter socket-powered compresseor, and tried to inflate the tire. And ... NOTHING. The pressure reading on the compressor immediately shot up to over 100 PSI, and it automatically shut off. Tried multiple times, with the same result. I again removed the valve core, and a) no air came out of the tire when I removed it, and b) even with no valve core the compressor still would not pump air into the tire. Clearly the gunk had completely blocked the valve/TPMS. Fortunately, when I took the tire to Costco (where I'd bought it), they were able to fix the damage I'd done, as well as patching a small nail hole in the tread I hadn't seen (that was clearly the source of the slow leak) for no charge. Since I've already submitted a refund request, ultimately all it really cost me was my time and effort ... and a whole lot of stress.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 26, 2024

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