![]() ![]() ![]() To determine this, gently pull plants and soil away from the container to check for root growth. Soon your plants will be established with roots growing to the edge of the pot. Now it’s time to feed your seedlings! Fertilize with a liquid feed weekly, following the instructions on the package. Then you can water thoroughly, allowing water to run through the bottom of the transplant pot or pack. While you don’t want the soil to completely dry out, you’ll want to wait to water until the soil is light brown and the container feels light when picked up. Keep the fluorescent lights over the young plants as described above and continue to monitor for moisture. Once the young plants have between four and six sets of “true” leaves, it’s time to transplant them to individual pots or packs. As the plants grow, and if you’re using fluorescent lights, move the light fixture up to maintain the 3-6” (7-15 cm) distance from the top of the plants. Night temperatures can go down to 55 degrees F (12 degrees C). The temperatures can start to cool, ranging from 65-70 degrees F (18-21 degrees C). Keep your tray in the bright or fluorescent-lit area. These early first leaves emerge in about five to twelve days. Once germination occurs and small green leaves (called cotyledons) are visible, remove the plastic cover. Here’s a quick tip: Covering the tray with clear plastic may help maintain temperature and increase humidity. Do not allow the tray to completely dry out. Check your tray daily and water when the soil looks dry on top and the trays feel light. Misting the tray with a clean spray bottle is the best method to water in this early stage, as this does not disturb the seed. The seed tray should be kept moist, not soaking wet or dry. And though light is important, you don’t want to place the tray in direct sunlight.įor tray temperature, you’re looking for 70-75 degrees F (21-23 degrees C) at the soil level for optimum germination. A timer may be helpful to turn the lights on and off. The lights can remain on for 14-16 hours per day. Place the fluorescent light approximately 3-6” (7-15 cm) above the top of the tray. Place the tray in a warm and bright location.įluorescent lights are suitable for a light source, both for germination and for growing on. Petunias benefit from light for best germination, therefore do not cover the seeds. ![]() Once you've determined your start date, sow your Wave Petunia seed into a moistened germination media or potting soil. ![]() What happens if you start too soon? Your seedlings may begin to stretch and outgrow their container, and could develop a weak structure since you won't be able to bring them outdoors in winter weather to harden them off (more on that below). So once you determine that last frost date, count backwards those 10-12 weeks and you can plan to get started. We generally suggest starting your Wave Petunias indoors about 10 to 12 weeks before the last chance of frost in your area. Hardiness zones determine your chance for frost – and frost will easily kill a young seedling. Your seed-starting time depends on the hardiness zone you live in. Follow these guidelines and soon you’ll be planting your seedlings and enjoying bright color in your garden. If you’ve never sowed your own petunias before, or haven’t had wild success, the tips below should be helpful. Many of our mail-order catalog partners sell Wave Petunia seed packets, and you often can find unique colors you may not find in stores. One of the economical ways to fill your garden with Wave Petunias is to grow your own plants from seed. Tips For Growing Wave Petunias From Seed Tips For Growing Wave Petunias From Seedīy Lisa Lacy, Product Manager, Wave Petunias ![]()
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