Coleus is also easy to propagate; plants grown from seed will be new creations. Make sure that your tropical plants are not placed in a cold draft. © Copyright 2020 Hearst Communications, Inc. When growing coleus, keep in mind that these beauties can grow rapidly. If more than one seedling emerges, clip or pinch out the excess seedlings. 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). And I’m excited. Some gardeners prefer to start their seeds in a sterilized, soil-less mix because it allows the seeds more access to light and air. Place the container in a very warm spot. 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. If you are starting them outdoors, wait until 1-2 weeks after the last frost. Dirt + Seeds+ Water = Food and Flowers! Choose a spot that is protected from wind. Sprinkle your coleus seeds onto the soil. Pruning will cause the plant to grow bushier. Don't confuse seed light requirements with what seedlings need. Press the seeds onto the surface of the soil, but don't bury them. If your Coleus plants are growing in the ground, then a … The plant will quickly produce more. Place in a sunny windowsill and if desired, you can cover the tray with a … If you plan to start them indoors, sow them 8 - 10 weeks before you want to plant outside. The other way of germinating coleus is to cutting root in plain water. 100 seeds PLANTING. The soil temperature should be kept between 70-75 degrees for quickest germination (10-15 … If the window is facing North how about a collection of African violets and their cousins. For more information, please see my disclosure policy. The culture is not picky and does not require special care. (In the table above, annuals that require light for germination are designated with the letter L in the lighting column.) Learn how your comment data is processed. Coleus seeds require light for germination so hopefully you didn't cover them. Coleus seeds need light to germinate, they must be planted on top of the 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 take 7 to 14 to germinate and grow slowly at first. I like a full look but never know whether to follow the recommended spacing or not. Most seeds germinate best under dark conditions and might even be inhibited by light (e.g., Phacelia and Allium spp.). Coleus branches break easily. Therefore, even a novice gardener can grow a coleus from seeds at home. Well, I was wrong. I hope they’re still viable and will germinate (fingers crossed). Work a 2-inch layer of compost into the soil and then smooth the surface of the soil before planting. 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. 4 Comments. Sow seeds on top of damp soil or seed starting mix, press them gently into the soil and do not cover. Coleus seeds need light and warmth to germinate. If germinated by seeds, the seeds are usually sprinkled over the soil and pressurize them to light soil. Coleus questions! 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. You can start the seeds outdoors in USDA zones 9 and warmer any time the soil temperature is consistently 70 degrees or warmer. Consistent moisture is good, but soggy conditions cause root disease. The bright, full direct afternoon sunlight can scorch the leaves and bleach out the plant’s colors. Second. However, some species (e.g., Begonia, Primula, Coleus) need light to germinate (Miles and Brown 2007). 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. 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. 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. Keep Coleus plants trimmed. 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. Your email address will not be published. I just watch for the seedlings and carefully lift them out and put them where I want them for the year. Coleus plants kept in containers can be fed a liquid fertilizer once a month throughout spring and summer. When plants are 1″ tall, thin to 1 every 6″-12″. Light Requirement. Some seeds actually germinate best when exposed to light; if these seeds are covered with soil, chances are that they will never sprout. This time around though, I think I’ll plant them in a few pots on the front porch. That way, you can be sure you’ll be giving your plants the right light exposure in the garden. Coleus require little maintenance. Coleus plants need temperatures of between 65°F and 75°F (24°C – 27°C). Coleus thrive in cool, evenly moist, well-drained soil. If you are starting them outdoors, wait until 1-2 weeks after the last frost. Check these plants more frequently and water when soil is dry. Brief description:  Coleus is a perfect ornamental annual for shady areas. The amount of light needed for each seed to germinate, however, is scarcely noted on the packets. Coleus needs well-draining soil. Also, how many coleus did you plant in the square garden container with the trellis? Planting Seeds: Coleus seeds need light to germinate, so press seed into the surface of your soil and do not cover. This site uses Akismet to reduce spam. When plants are 1″ tall, thin to 1 every 6″-12″. They germinate best in temperatures between 65 and 75 degrees Fahrenheit. However, the seeds are cheap and easy to obtain. I bought some specialty coleus seeds a few years ago and want to plant them this year. When planting coleus in areas that don't get much sun, be careful not to overwater. 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. Improve the soil with compost and transplant the seedlings when all danger of frost has passed. 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. Cover your trays with plastic domes if you have them, and set the trays somewhere that’s between 70-75°F. The seeds of some plant species require light for germination. This post may contain affiliate links. Planting Seeds:  Coleus seeds need light to germinate, so press seed into the surface of your soil and do not cover. Growing coleus from seeds gives you access to a wide range of possibilities. Her home-and-garden and nature articles have appeared in "Birds & Blooms" and "Alamance Today." okay I know this is about coleus but I have a thought about that little space by the window. Required fields are marked *. 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. 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. Posted on December 13, 2020 | December 13, 2020 | Press the seeds into light soil, but don’t cover them, as coleus seeds need light to germinate. Sow coleus seeds in small, individual pots containing seed starting medium. Balance Water and Light. Coleus can be propagated either by sprinkling the seeds on the soil and pressing them gently in the soil.

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