image from almanac.com Good morning….It is 28F(-2 C) already at 10:00AM high today 43F (6 C) low tonight 20F ( -7C) so it is warming up. Clear blue sky with clouds moving in this afternoon. Also have a south wind so it does make it feel a little colder. ENJOY stay warm, stay safe.
Now Australia’s had a very hot day. Evelyn wrote that the temperature got to 104F(40C) Their time now which is Jan 28th will be a little cooler at 76F(24C) With high humidity, it still will feel warm. Stay cool, stay safe Using Seedling Heat Mats to Start Seeds Indoors by Robin Sweetser WARNING FROM THIS AUTHOR Never use an electric blanket. They get too hot, use too much electricity, are a fire hazard, and can give you a nasty shock if they get wet. Same is true for a heating pad. Want your seeds to germinate faster? Seedling heat mats really work! They’re a cheap, compact alternative to a greenhouse, too. If you are lucky enough to have a car with heated seats, you understand the value of bottom heat, and when trying to get seeds to germinate, bottom heat comes in handy as well. In the past, we were advised to put our seed flats on a warm surface like the water heater or the top of the TV, but with on-demand water heaters and flat-screen TVs, those hot spots are long gone. What are Seedling Heat Mats? Seedling heat mats are waterproof, rubberized pads that you place under your seed flats or pots. The mats are waterproof, so there are no electrical worries when watering plant trays. Several layers of plastic are heat-bonded over strong heating wire.They increase the temperature of the soil by 5° to 10°F so your seeds germinate faster. What’s just as important is that seeds germinate better with less uneven rates, and plants end up being healthy with such consistent warmth. Heat mats especially benefit warm-weather vegetables, including tomatoes, peppers, and eggplants, giving them a chance to grow past the seedling stage before being transplanted outside. Buying the Best Seedling Heat Mat When shopping for a heat mat, make sure it is designed to be used in a wet location. The waterproof rating should listed on the product. IPX4 is water resistant but can’t be submerged in water. IP67 is fully waterproof and can be under water for 1/2 hour and still work. Heat mats use very little electricity and only get warm enough to encourage your seedlings to pop up. Some are thermostatically controlled so you can set the temperature you want, while others just warm the root area 10° to 20°F above the air temperature. You can always check the soil temperature with a soil thermometer if you think it is getting too hot or not getting warm enough. A 10x20-inch mat holds one standard tray perfectly and costs under $20. There are larger mats that hold 2 trays or more and 3-inch-wide strips made for using on a windowsill. Most roll up easily for storage. The optimum temperature for most seeds to germinate is between 65° and 85°F. A heat-lover such as okra likes soil in the 85° to 95°F range, but others like cooler soil. The germination rate for lettuce drops off sharply in soil over 70°F, so lettuces don’t need to take up space on your heat mat. Seedling Heat Mats for Safety Seed mats are very safe. Don’t put your mat on anything sharp that could puncture it and don’t pile soil directly on it. Covering it with insulating materials could cause it to overheat. So many DIY efforts are safety hazards. Never use an electric blanket. They get too hot, use too much electricity, are a fire hazard, and can give you a nasty shock if they get wet. Same is true for a heating pad. Save it for your sore muscles. No, you don’t have to drive the seed flats around in your car until they germinate. How Long Do You Keep Heat Mat On? For consistent warmth, leave the mat on 24 hours a day until the seeds sprout, rather than shutting it off at night. Do not turn it off. Seeds beneath the soil do not need nighttime cooling; they need constant warmth to sprout. Flats not covered with a humidity dome or in a plastic bag will dry out fast on the mat, so check them daily and water as needed to keep the soil moist. When to Remove Seedlings From Heat Mat Leave your seed starting trays on the heat mat only until they germinate. As soon as your seeds pop up, take off the dome or any plastic coverings, remove the flat from the heat, and place them in a cool bright spot to continue growing. Make room for the next seed starting tray(s). You may find your heat mat comes in handy for other projects like making yogurt, kombucha, bread or beer. I put mine to good use warming my old cat Guido’s bed during his final days. I’m not big on gadgets ,but our heat mat gets used every spring to speed up the germination process. Taken from https://www.almanac.com/using-seedling-heat-mats-start-seeds-indoors Till next time this is Becky Litterer, Becky’s Greenhouse, Dougherty Iowa [email protected] 641-794-3337 cell 641-903-9365
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AuthorHi! My name is Becky and I am a Master Gardener. I own Becky's Greenhouse in Dougherty, Iowa. Archives
January 2025
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