Dirt + Seeds+ Water = Food and Flowers! This post may contain affiliate links. Place the pots on a heating pad, seed-starting mat or cozy window sill to get them started and keep between 70ºF and 75ºF. Coleus can easily be started from seed indoors about 10 weeks before the last frost date in your region. I see what looks like a lot of seedlings in one growing pot. You can cut and promote. Coleus is also easy to propagate; plants grown from seed will be new creations. If germinated by seeds, the seeds are usually sprinkled over the soil and pressurize them to light soil. A few places that work are a seed sowing heating mat, or placing the container on top of the fridge or freezer, near a heating vent, or in a very sunny window with several hours of strong daylight. In order to grow successfully indoors as a potted plant you will need to offer it five things: appropriate soil, appropriate light, food, and water and adequate pinching. Seed Planting Depth: Sow on the surface, needs light to germinate If you plan to start them indoors, sow them 8 - 10 weeks before you want to plant outside. Moisten the soil to a depth of several inches and then press the seeds onto the surface of the soil, but don't bury them. The seeds of some plant species require light for germination. Posted on December 13, 2020 | December 13, 2020 | Thank you for the reminder about Coleus!!! I also pinch cuttings and root them in water if I need more plants. Coleus require little maintenance. Begin preparing the young seedlings for outdoor life about two weeks before transplanting them by placing them in a shady location outdoors for gradually increasing lengths of time. When planting coleus in areas that don't get much sun, be careful not to overwater. However, some species (e.g., Begonia, Primula, Coleus) need light to germinate (Miles and Brown 2007). She holds a Bachelor of Science in medical technology from the University of North Carolina. An easy way to place just a few of the tiny seeds on the surface of the soil is to press a small, soft artist's paintbrush into the seeds and then tap it gently over the center of the pot. Coleus thrive in cool, evenly moist, well-drained soil. I had seen some crazy lush hanging baskets and planters for sale at Watson’s Greenhouse and remember thinking there was no way I’d be able to grow them in containers the way they had. They tolerate wide-ranging soil types or pH, but need excellent drainage. I”t could even hold a large poster of ships in a harbor or a lobster. Planting season, it’s nearly here! 4 Comments. After sowing these seeds, lightly press them into the germination medium, but do not cover them. If they bloom they tend to become leggy. I first started growing coleus about 10 years ago when Mrs. HB and I were neighbors. Choose the right soil. These plants, such as balloon flower (Platycodon grandiflorus) and poppies, drop their seeds on the soil and they germinate where they land. Coleus seeds need light and warmth to germinate. Coleus branches break easily. Where to Plant Coleus:  Plant coleus in raised beds, garden beds, containers, hanging baskets, as indoor house plants, etc. How to Start White Swan Coneflower From a Seed, How to Germinate Calendula Pacific Beauty Mix Seeds, Washington State University Clark County Extension: Colorful Coleus, How to Start Seeds Indoors With Liquid Seaweed. They germinate best in temperatures between 65 and 75 degrees Fahrenheit. Coleus seeds take 7 to 14 to germinate and grow slowly at first. All … Some seeds need the stimulus of light hitting them before they will break dormancy and start to germinate. coleus light requirements. Coleus is very tender annual, and are susceptible to even a light frost. Make sure that your tropical plants are not placed in a cold draft. However, the seeds are cheap and easy to obtain. Very often it is seeds that self-sow that require light. Choose different varieties to add more depth and varying colors. Also, how many coleus did you plant in the square garden container with the trellis? 2. The ideal spot for a Coleus Plant is one that receives afternoon shade and morning sun. Coleus seeds need light to germinate, they must be planted on top of the soil. The amount of light needed for each seed to germinate, however, is scarcely noted on the packets. To ensure germination, these seeds should be pressed lightly onto the surface of the soil and kept moist. Keep plants moist–mulching is a good idea to help with this. It isn’t necessary to feed the plants during fall and winter, as this is a period of minimal growth. Balance Water and Light. Coleus adds colorful foliage and a wide range of shapes and colors to shady parts of the garden. The seeds are very small, so it's best to pre-moisten the soil so that you don't rinse the seeds down into medium when you water. Therefore, even a novice gardener can grow a coleus from seeds at home. (In the table above, annuals that require light for germination are designated with the letter L in the lighting column.) 1. Coleus seeds need light to germinate. Although the growing guidelines described here make it possible to grow coleus indoors year-round, coleus is often grown as an annual and discarded once it becomes leggy (a problem … I just ordered some seeds, can’t wait! 2. You should use nutrient rich soil that drains well, as coleus don’t like to be in … The weaker rays of winter, lasting for such a shorter time each day, make increased exposure necessary for most plants that have been brought in from outside. Coleus likes bright light, but be careful of intense sunlight. Start indoors 6-8 weeks before average last frost in your area. Check these plants more frequently and water when soil is dry. 100 seeds PLANTING. Space the seedlings 12 to 20 inches apart, or closer for dwarf cultivars. Rules for growing Coleus from seeds at home To grow coleus from seeds is possible even for an amateur. My Mom always grew coleus when I was a child over 50 years ago and I remember my grandmother growing them. They need fertile, well-draining soil and usually perform best in areas with partial shade, though many varieties can also tolerate sun. Seeds started indoors need at least eight weeks of indoor growing before transplanting outdoors. I hope they’re still viable and will germinate (fingers crossed). Coleus plants kept in containers can be fed a liquid fertilizer once a month throughout spring and summer. Your email address will not be published. Your email address will not be published. Too much sun can cause purple-black ones to fade all over or they may scald (have pale burn spots on leaves). Sow coleus seeds in small, individual pots containing seed starting medium. Press the seeds onto the surface of the soil, but don't bury them. Look for a spot where the plant gets bright morning sunlight but indirect light during the afternoon. Keep Coleus plants trimmed. As with many other types of plants, the key to growing successful coleus begins with picking the appropriate potting soil. This site uses Akismet to reduce spam. Coleus questions! When plants are 1″ tall, thin to 1 every 6″-12″. Set plants out after all danger of frost is past. Consistent moisture is good, but soggy conditions cause root disease. I just watch for the seedlings and carefully lift them out and put them where I want them for the year. If your Coleus plants are growing in the ground, then a … The other way of germinating coleus is to cutting root in plain water. Head on over HERE and you’ll be taken to a handy dandy chart that is broken down into what vegetables should be planted {or transplanted} each month in your area. Thanks to more than 200 years of hybridization, we can grow coleus in any color but blue and with leaf shapes that range from simple lancets to deeply cut, ivylike foliage. The reason is that the sun is the hottest in the afternoon. To do this, follow simple rules and recommendations. Start by reading the plant label to see if you have a shade-only variety or one of the newer models that thrive in sun or shade. Thank you for supporting One Hundred Dollars a Month. Second. And for any color, too … Some seeds actually germinate best when exposed to light; if these seeds are covered with soil, chances are that they will never sprout. Coleus are a snap to grow, too. Be sure to monitor water levels carefully. If more than one seedling emerges, clip or pinch out the excess seedlings. Some modern cultivars tolerate full sun, but most varieties prefer full or partial shade, and the color improves with the amount of shade. Most seeds germinate best under dark conditions and might even be inhibited by light (e.g., Phacelia and Allium spp.). Required fields are marked *. Coleus can be propagated either by sprinkling the seeds on the soil and pressing them gently in the soil. Don't confuse seed light requirements with what seedlings need. Make sure they get sunlight from a window, or place them under grow lights to germinate. Growing Tips:  Plant in an area with shade to part sun. The best care tip is to avoid sudden changes in temperature and protect them from frost. Press the seeds into light soil, but don’t cover them, as coleus seeds need light to germinate. I bought some specialty coleus seeds a few years ago and want to plant them this year. The culture is not picky and does not require special care. Then, plant your coleus in enriched soil and water whenever the soil feels dry to the touch. Brief description:  Coleus is a perfect ornamental annual for shady areas. Light can affect leaf color on coleus plants For the most part, coleus with red and orange leaves tolerate all-day full sun. Light Requirement. If the window is facing North how about a collection of African violets and their cousins. Coleus are very easy to grow from seed and it’s fun to see the different colors of plants that will grow from one packet of seeds. Are you ready to start your garden but you’re not sure when you should plant your seeds or set out your transplants? Houseplants for different indoor light conditions There also could be a herb garden with fairy houses You could even place a bunch of pretty birdhouses. Raising coleus from seed is relatively easy. Learn how your comment data is processed. Mist the seeds if you are growing coleus directly in the garden. These affiliate links help support this site. Germination: 10-15 days. The soil temperature should be kept between 70-75 degrees for quickest germination (10-15 … Germination takes 10 - 12 days if kept at 72 degrees F. They are also simple to propagate from cuttings. Coleus is easy to root in a glass of water, but these cuttings will look exactly like the parent plant. Water. Last night as I was sorting through my seed packets and organizing them by their planting dates, I came across a packet of Rainbow Blend Coleus seeds and smiled. Press the seeds onto the surface of the soil, but don't bury them. Her home-and-garden and nature articles have appeared in "Birds & Blooms" and "Alamance Today." Keep the temperature about 70 degrees, and the soil moist, and your seedlings will sprout in 10-14 days. Seeds germinate best in a humid environment. Coleus seeds are fairly inexpensive and may be purchased from almost any nursery or harvested from a plant that has gone to seed.Propagating coleus from seed is a fairly easy process and within two weeks of germination, coleus seeds will have sprouted and began to show their colors. Sow seeds on top of damp soil or seed starting mix, press them gently into the soil and do not cover. I think they’ll look fantastic against the backdrop of our little white house, and hopefully add a little joy to the people who walk by everyday with their dogs. You could even make a puggle spot bench with a mirror over it to reflect the light around the house. It is not just the very tiny seeds which sometimes need light to germinate, an average seed like Impatiens is light sensitive too and should be covered with a fine sprinkling of vermiculite after sowing and left in diffused light, placed in polythene to provide a high humidity until germination which usually takes 10-14 days at 21-42°C (70-75°F). I like a full look but never know whether to follow the recommended spacing or not. Do not cover the seeds as they need light to germinate. When plants are 1″ tall, thin to 1 every 6″-12″. You may be able to start seeds without artificial lighting, but seeds that need more time indoors, such as tomatoes and peppers, may become leggy without extra light. The Gardener's A-Z Guide to Growing Flowers from Seed to Bloom; Eileen Powell. You may need to supplement available light with artificial lights during the winter. Do not cover the seeds with seed starter or soil, coleus need light to germinate. Gently press them into the soil mix, but don’t cover them because they need light to germinate. When the seedlings emerge, thin them to 12 to 20 inches apart, or closer for dwarf varieties. Choose a spot that is protected from wind. High-light areas can be warm, making plants dry out faster. For more information, please see my disclosure policy. Jackie Carroll has been a freelance writer since 1995. Start indoors 6-8 weeks before average last frost in your area. It takes 10 days or more for the seeds to germinate. Anyone can do this. Improve the soil with compost and transplant the seedlings when all danger of frost has passed. Sprinkle your coleus seeds onto the soil. AFAIK, Coleus seeds need light to germinate. You can start the seeds outdoors in USDA zones 9 and warmer any time the soil temperature is consistently 70 degrees or warmer. Seeds require light to germinate, so do not cover the seeds too much. And I’m excited. Growing coleus from seeds gives you access to a wide range of possibilities. Coleus seeds require light for germination so hopefully you didn't cover them. The plant will quickly produce more. Solenostemon scutellarioides. Curious how many seeds you plant in each pot, and do you thin them? Copyright © 2020 One Hundred Dollars a Month - Disclosure Policy - Design by Sharon Hujik, Mavis Garden Blog - Espalier Trees, Pallet Gardening, Kale Starts and More, Growing Vegetables in a Greenhouse - Spinach, Lettuce, Swiss Chard, Strawberries and Tomatoes, Gothenburg Botanical Garden - Desert Life Exhibit. This time around though, I think I’ll plant them in a few pots on the front porch. If you are starting them outdoors, wait until 1-2 weeks after the last frost. Remove spent blooms, dead or dying leaves, and cut back any stems that are sick or unsightly. If you are starting them outdoors, wait until 1-2 weeks after the last frost. Watch the plant closely. Plan to sow them indoors, eight to 12 weeks before the last frost date in your area. They do need to have the flower buds removed if you want them to stay compact. Planting Seeds: Coleus seeds need light to germinate, so press seed into the surface of your soil and do not cover. Well, I was wrong. Because seeds require light to germinate, sow them on the surface. I’ve grown Coleus in Washington and here in New England now and I’m happy to report, they have done beautifully on each coast. Coleus is SUPER easy to grow, and well, they just keep on getting bigger and bigger as the season progresses and I’m looking forward to planting them again this year. Cover your trays with plastic domes if you have them, and set the trays somewhere that’s between 70-75°F. Pruning will cause the plant to grow bushier. I also keep them in a windowsill, or as close to an E/W/S window as possible. Coleus plants need temperatures of between 65°F and 75°F (24°C – 27°C). Grow coleus as a perennial in U.S. Department of Agriculture hardiness zones 10 through 12, or as an annual in any zone. The bright, full direct afternoon sunlight can scorch the leaves and bleach out the plant’s colors. Coleus seeds need light to germinate. You may need to use a heat mat, as coleus seeds require a consistent temperature of 70-75°F to germinate. They germinate best in temperatures between 65 and 75 degrees Fahrenheit. That way, you can be sure you’ll be giving your plants the right light exposure in the garden. I do about 75 pots on our large deck every year and it has been many years since I had to plant any since they self sow so readily. Coleus can be added to beds and borders for interest or grown in containers. Coleus is a popular ornamental culture from the family Yasnotkovye (Labrettes). When growing coleus, keep in mind that these beauties can grow rapidly. Water the plant thoroughly after planting. Keep the air surrounding them moist by using a seed tray with a clear plastic cover or by enclosing the pots in a plastic bag. Some gardeners prefer to start their seeds in a sterilized, soil-less mix because it allows the seeds more access to light and air. Being a tropical perennial plant, all varieties of coleus plants grow in average room temperatures. You can grow from seed. It adds a pop of awesome color where other plants cannot thrive. © Copyright 2020 Hearst Communications, Inc. Annual. They need light to germinate, so gently press them into the potting mix, but do not cover. Coleus needs well-draining soil. okay I know this is about coleus but I have a thought about that little space by the window. Hang out with Mavis & Lucy right in your Inbox! Place the container in a very warm spot. Work a 2-inch layer of compost into the soil and then smooth the surface of the soil before planting. Planting Seeds:  Coleus seeds need light to germinate, so press seed into the surface of your soil and do not cover. Place in a sunny windowsill and if desired, you can cover the tray with a … Germination Temperature: Optimum soil temperatures 70-75ºF. There are two ways to grow coleus 1. 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