Jiffy pellets are not suitable for most hydroponic setups where the roots are grown directly in water, but Jiffy Pellets can be directly transferred into soil or coco coir. Good Germination Rates for Soil and Coco Coir Good for Cloning – read a cannabis cloning tutorial using Jiffy pellets Come in dried pellets, so they can be kept for a long time. Not suitable for hydroponic setups Must be soaked to expand each pellet before use. How to Use: Soak Jiffy pellets in warm water, which makes the pellets expand in size, as pictured below. Once the compressed Jiffy pellets have expanded in warm water, gently squeeze excess water from each pellet and you’re ready to go.
Germination Method 2: Plant marijuana seeds directly in growing medium. In nature, marijuana seedlings would sprout in soil, and they would emerge as their taproots start growing down. As a grower, you can also plant your seeds directly in your final growing medium. This works in all growing mediums, though some can be tougher than others. One of the biggest benefits of planting your seed directly in the growing medium is you don’t have to worry about shocking your young seedling during transplant. Because your seed is already in its final resting place, your new seedling will immediately start adjusting to the environment. Every time you transplant a sprouted seed, it can cause stress as the young plant needs to readjust its new surroundings. Soil – Plant seeds a knuckle deep (0.5-1 inch OR 1.3 cm – 2.5 cm) in moist yet not soaking soil. This is one of the easiest marijuana germination methods for beginners.
Coco Coir or other soilless growing mediums – Plant in a similar way to soil. One option for growers is to use a tool which has been specifically designed to provide optimal germination conditions like this germination station with heat mat. You can make a DIY germination station at home by putting a plastic dome over a plate on a heating pad. There are benefits to the professionally made germination stations as they work very well and are pretty cheap to buy. When growers start their cannabis seedlings in a germination station, the seeds are usually germinated in a starter seedling cube. One of the advantages of starting seeds in starter cubes is your sprouted seeds can easily be transferred right to their next growing medium or container. I recommend Rapid Rooters as these starter cubes work great for cannabis seeds and can be used in any growing medium including hydroponics, soil, or coco coir. Other starter cubes include Jiffy Peat Pellets, and Rockwool cubes. Once your seed has sprouted, just make a little hole in your growing medium, and place the entire pellet inside. Make sure growing medium is also moist yet not soaking, like your pellet or cube. The roots will emerge from the bottom of the cube and burrow directly into your growing medium. Germination Method 4: Soak Marijuana Seeds in Water Overnight. Another method to germinate marijuana seeds is to soak them overnight in slightly warm water, usually done in a glass drinking cup. This method is especially effective for seeds which have extra hard shells, or seeds which are older (more than a few years old). The warm overnight soaking can help “wake up” older seeds. Most viable seeds will start out floating, and then eventually sink to the bottom of your glass after a few hours of soaking. If soaked in a clear drinking glass, you will see when the little white tap root first breaks through the shell. Especially older seeds tend to need longer to pierce through their shell. However, if seeds are left soaking too long, and haven’t yet sprouted, they can drown. Therefore, do not leave seeds soaking in water for more than 24-32 hours. After 24 hours, I recommend putting any still-ungerminated seeds in a warm, moist place to finish germinating. One way to germinate seeds is to wet a paper towel and then fold your seeds in it, then leave the paper towel in a warm place.
For some reason, the really cheap paper towels work best because they’re so non-porous. Seeds and their roots lay on top without getting stuck to anything. The more expensive “cloth-like” paper towels (like Viva brand) aren’t good for germination because the roots actually grow into them instead of laying on top. If you germinate your seeds in a paper towel, there is the risk of hurting the tap root (the little white root that grows out of your seeds) when moving the sprouted seeds so make sure you are careful when you’re checking to see if the seeds sprouted. There is also the possibility of having the towel dry out which will kill your new seeds so I recommend putting your paper towel under an upside down bowl or between two paper (or regular) plates. Check on germinating seeds once every 12 hours or so (don’t disturb them or their roots).
You can plant any seeds which have sprouted right away, or leave them for another day or two, to let the others keep up. After you see that your cannabis seeds have sprouted, you should plant them right away. You don’t want to touch the little white taproot with your fingers, so either carefully move the seeds, or use tweezers.