Product Review: Jiffy Seed Starting Jiffy-Mix®

Our 10 Qt. Jiffy bag.

Welcome to our first ever product review! Here we will either be praising or bashing a product we've used in our garden. The first victim product to be reviewed is Jiffy's Seed Starting Mix®. This is a very popular brand that is widely available in Puerto Rico. This light, loose, soil-less mix consists of peat moss and vermiculite and is designed to promote fast germination and root growth. It doesn't contain any nutrients so this is only meant for germination not for long-term growth. It comes in various sizes including 4, 10, and 16 Qt. bags. The larger sizes are excellent for planting a good number (35-50) of seeds at once.

Let me get this out of my system first. I initially hated this product. Why? Because when I took the stuff out of the bag and watered it it became a swamp. Literally the stuff would not absorb water. It seemed impermeable. And I wasn't alone in this predicament. Several reviewers in Amazon and other websites had suffered through the same experience. Was I was supposed to put my seeds in this stuff? No thanks.

But being as stubborn as I am (did I just admit that?) I wouldn't give up on the product. I first started out trying to grow a few peppers, a couple of tomatoes and some herbs. We had previously used these same seeds on Jiffy pellets with great results. Success rate with the mix was lower than 25% (*Insert sad face*. Side note: blogger should have native emoticon support available for posts. They actually direct you to external websites for your emoticon needs. Sigh). After that I tried my luck with a few lettuce seeds. Success rate increased to about 50% but I still wasn't satisfied with the product since it still wouldn't hold water properly (and 50% germination rate is not good anyways).

Left - Jiffy mix out of the bag, Middle - Swampy Jiffy mix,
Right - proper Jiffy mix after stirring with water

I let the product go unused for a few weeks since I was both frustrated with it and waiting for a seed order I had made with genericseeds.com (good prices, reserving a final verdict on quality until we use more seeds). We went to a local nursery on an unrelated trip to pick up a palm tree for a neighbor and the attendant was using a similar product. He told us that he uses the mix but that it bogs down unless you know the trick: Water and elbow grease. He told us to add water to the mix and stir it continuously until it becomes mud-like. Then it's ready to use. Excited with these news I anxiously waited until the seeds arrived. When the time had come I stirred and mixed until a mud-like consistency was achieved. Success! Then we deposited the mix into our germination tray and planted close to 30 seeds. As of this writing we have a germination rate of 85% and climbing. Nice!

Verdict: If you're looking for an alternative to pellets or are looking to germinate a large number of seeds we recommend this product. Follow our advice and you should have no problem obtaining great results with this mix.

Disclaimer: Container Gardening in Puerto Rico is not affiliated with the company that makes this product or any of its affiliates. We did not receive any free products or other compensation for this review.