--- title: Greenhouse Gardening Tips | seeding (2) description: seeding | Tips & advice for greenhouse growing. Read seasonal articles, view greenhouse photos and learn our history too! (2) --- [Skip to content](https://blog.bcgreenhouses.com/tag/seeding/page/2#main-content) Announcement Bar/Update or Announcement   Learn More This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. 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Posts about: ## seeding (2) ![Spinach ](https://blog.bcgreenhouses.com/hubfs/spinich.jpg) ### [What Are the Tips for Starting a Greenhouse Garden Now? Schedule Your Crops](https://blog.bcgreenhouses.com/greenhouse-garden-tips-starting-with-cold-crops) Mar 21, 2022, 1:35:51 PM ### Quick Answer: **Want to kickstart your greenhouse garden this season?** The best time to begin is now. Cool-weather crops like arugula, bok choi, spinach, and radishes thrive in early spring greenhouse conditions—even in unheated spaces. Warm the soil with heating cables or IRT mulch to speed up germination and enjoy a head start on the growing season. Greenhouse gardening in late winter or early spring also means fewer pests, like flea beetles. While heat-loving plants like peppers need more warmth to sprout, starting them indoors on a damp paper towel can ensure strong, healthy transplants later. With the right timing and a simple crop schedule, your greenhouse can produce fresh greens and veggies year-round. --- ## Schedule Your Greenhouse Garden Now Showing off my arugula (also known as rocket) on [Instagram](https://www.instagram.com/donna_balzer/) leads to a lot of questions about my greenhouse and what I currently have growing.  ![](https://blog.bcgreenhouses.com/hubfs/Caulitflower.jpg) ### [What Are the Tips for Greenhouse Gardening in March and April?](https://blog.bcgreenhouses.com/sunny-march-greenhouse-garden) Mar 3, 2022, 11:33:00 AM ### Quick Answer: **What are the tips for greenhouse gardening in March and April?** Early spring greenhouse gardening involves starting fruit cuttings like raspberries over heat mats to encourage rooting, transplanting hardy crops such as peas for early harvests, and directly sowing cold-tolerant seeds like radishes, spinach, and arugula in unheated soil. By managing space, timing crops carefully, and using seasonally appropriate strategies, gardeners can extend their growing season and enjoy fresh produce well before outdoor gardens mature. This approach maximizes greenhouse productivity while creating a rewarding, year-round gardening experience. --- ## Sunshine on Your Face in the Greenhouse Garden I close my eyes as I bask in the sun, heat on my face. I take off my jacket and then my hat. My neighbors, friends and family have gone away to Martinique, Belize and Spain but I am experiencing the best holiday. I am sitting in the sun at home – in my [Greenhouse Garden](https://blog.bcgreenhouses.com/greenhouse-garden-tips-maximizing-space-to-grow-your-own-food). ![Growing starts in my April greenhouse](https://blog.bcgreenhouses.com/hubfs/SeedlingsH.jpg) ### [How Do Worm Castings, Pests, and Algae Affect My Greenhouse Garden?](https://blog.bcgreenhouses.com/greenhouse-garden-tips-my-april-greenhouse) Feb 24, 2022, 5:18:00 PM ### Quick Answer: Worm castings naturally fertilize plants and support beneficial bugs like fungus gnat predators, but excess moisture and nutrients can also lead to algae growth—use well-draining soil, sticky traps, and fans to balance greenhouse conditions and protect seedlings. --- ## Pests, Worm Castings and Algae ### What are Worm Castings? Before we get to [greenhouse gardening](https://blog.bcgreenhouses.com/) algae, let's talk about a shopper on Amazon that complained about bugs in her worm castings. If you [don’t speak garden lingo](https://blog.bcgreenhouses.com/greenhouse-garden-tips-maximizing-space-to-grow-your-own-food) yet, worm castings are simply worm poop. They are mixed with soil in garden beds or in pots to make tomatoes grow faster, stronger and healthier. And just in case you missed the memo, worm poop comes with bugs of its own. The good ones. ![Kale and other greenhouse green vegetables](https://blog.bcgreenhouses.com/hubfs/Greenhouse%20Green%20Vegetables.jpg) ### [5-Step Plan for Sensible and Successful Greenhouse Gardening?](https://blog.bcgreenhouses.com/a-5-step-plan-for-greenhouse-growing-this-year) Feb 24, 2022, 12:29:00 PM ## Quick Answer: BC Greenhouse Builders recommends a five-step approach for sensible greenhouse gardening success: ![](https://blog.bcgreenhouses.com/hubfs/Tomatoes-2.jpg) ### [What’s the Best Timeline for Growing Greenhouse Tomatoes Successfully?](https://blog.bcgreenhouses.com/greenhouse-garden-tips-greenhouse-tomatoes) Feb 21, 2022, 4:27:00 PM ### Quick Answer: Start tomato seeds in mid to late March with bottom heat, provide strong light and nutrients early, and move them into your greenhouse once temperatures consistently stay above 10°C (50°F); maintain airflow and prune lower leaves as fruit sets to optimize harvest into fall. --- ## So Many Tomatoes, So Little Space Greenhouse tomato growers are rightfully confused when they see so many kinds of greenhouse tomatoes for sale. Karen Olivier, an independent tomato breeder from the [Secret Seed Cartel](https://secretseedcartel.com/product-category/all-tomatoes/karen-olivier-tomatoes/), estimates there are 20,000 kinds of tomatoes listed right now and she is adding to that number by breeding new tomatoes every year.   ![Different Varieties of Tomatoes](https://blog.bcgreenhouses.com/hubfs/Sweetness%20in%20tomatoes%20is%20a%20measure%20of%20minerals%20in%20soil%20and%20variety.jpg) ### [What Are the Tips to Soil Amendments & Nutrients in a Greenhouse Garden?](https://blog.bcgreenhouses.com/greenhouse-garden-tips-soil-amendments-nutrients) Feb 9, 2022, 5:14:00 PM ### Quick Answer: **What Are the Best Tips for Soil Amendments & Nutrients in a Greenhouse Garden?** Optimizing greenhouse soil requires building “super soil” by blending quality soil-less mix with compost, biochar, and worm castings, plus adding essential nutrients like nitrogen, phosphorus, potassium, calcium, and micronutrients through amendments such as seed meals, lime, kelp, and gypsum. Recognizing nutrient deficiency signs—like purple leaves from low phosphorus or brown spots from potassium shortage—helps timely fertilization and soil management, ensuring healthy plant growth and improved crop flavor. Regular soil amendment and fertilization tailored to plant needs foster vibrant, productive greenhouse gardens year-round. --- ## Importance of Soil Amendments & Nutrients in Greenhouse Gardening A few years back [my greenhouse](https://blog.bcgreenhouses.com/greenhouse-garden-tips-maximizing-space-to-grow-your-own-food) tomato leaves were purple, yellow and spotted. Not all at once, but over time and on different leaves. It was the second year I was growing in my greenhouse and the commercial potting soil I bought was low on phosphorus, nitrogen and potassium. The leaves on the plants were telling me what was going on. And it didn’t look good. ![](https://blog.bcgreenhouses.com/hubfs/Tomatoes%20growing%20on%20the%20vine.jpg) ### [How Can Warming Soil Help You Rush the Growing Season and Speed Up Crop Growth?](https://blog.bcgreenhouses.com/greenhouse-garden-tips-early-season-gardening) Jan 20, 2022, 3:09:00 PM ### Quick Answer: How Can Warming Soil Help You Rush the Growing Season and Speed Up Crop Growth? Warming soil with electric heating cables prevents freezing, creates a heat reservoir that radiates warmth to plants, and accelerates seed germination and crop growth, enabling gardeners to start hardy and heat-loving crops earlier in the season for faster, more productive harvests. --- ## Is patience a virtue? Some gardeners wait for the sun to gently warm the soil before they start their garden. Others are impatient. ![](https://blog.bcgreenhouses.com/hubfs/potluck%20arugla%20salad.jpg) ### [How to Grow Arugula in My Greenhouse? From Seed to Salad](https://blog.bcgreenhouses.com/greenhouse-gardening-tips-greenhouse-arugula) Jan 13, 2022, 1:58:00 PM ### Quick Answer: **How Do I Grow Arugula in My Greenhouse From Seed to Salad?** Arugula is an easy, hardy winter green that thrives in cool greenhouse conditions, reseeds itself naturally, and requires minimal pest control with simple mesh covers in spring. Growing your own arugula lets you enjoy fresh, flavorful leaves and edible flowers all winter long, perfect for salads or toppings. Understanding its growth cycle helps you maximize harvests and incorporate this nutritious green into your seasonal meals confidently. --- ## My go-to recipe My potluck arugula salad is sprinkled with jewel-toned tropical pomegranate seeds. My neighbour Barbara is excited and quickly tells me how much she loves the bitter taste of arugula. So I tell her I grow arugula as a [winter](https://info.bcgreenhouses.com/en-ca/bc-greenhouses-in-winter) crop and now she is all ears. ![](https://blog.bcgreenhouses.com/hubfs/Image%20of%20Soil%20Primer.jpg) ### [What's the Best Soil for Greenhouse Gardening? A Comprehensive Guide](https://blog.bcgreenhouses.com/greenhouse-garden-tips-the-best-soil-primer) Jan 4, 2022, 4:22:00 PM ## What is the Best Soil for Greenhouse Growing? ### Quick Answer: **What is the best soil for greenhouse gardening?** The ideal soil for greenhouse growing balances drainage, nutrient retention, and microbial activity—making custom blends like loam, triple mix, or super soil more effective than natural or bagged top soils. **Should you use bagged soil or soil-less mixes in a greenhouse?** While convenient, most bagged top soils and soil-less mixes lack essential nutrients and structure for long-term crops, so combining them with compost or organic amendments is key. **How can you create high-performance soil for greenhouse plants?** Blending your own triple mix (one-third soil, compost, and peat) or upgrading to a nutrient-rich super soil with worm castings, biochar, and trace minerals provides a strong foundation for healthier plants, richer flavors, and vibrant blooms. --- If you are new to gardening and think growing is just a matter of adding water, you're in for a surprise. With terms like super soil, triple mix, natural soil, and even soil with no soil—it's no wonder new gardeners feel overwhelemed. So how do you choose the right soil for strong, healthy growth? And how do you get the most flavorful food and the brightest blooms? ![The inside of Donna's Greenhouse](https://blog.bcgreenhouses.com/hubfs/The%20inside%20of%20Donna%20Balzers%20Greenhouse.jpg) ### [What Are the 6 Tips for Cleaning a Greenhouse Before Winter Sets In?](https://blog.bcgreenhouses.com/greenhouse-garden-tips-spring-cleaning-comes-early) Nov 9, 2021, 3:48:00 PM ### Quick Answer: **What are the 6 essential tips for cleaning a greenhouse before winter sets in?** The best time to clean your greenhouse is in late fall when plant growth slows, focusing on removing dead plants, reducing watering, clearing cobwebs, washing overwintering plants, and cleaning row covers to prevent pests and diseases. A thorough fall cleaning deters common greenhouse problems like mold, fungus gnats, and spider mites, ensuring a healthier growing environment for the upcoming season. Starting early and cleaning on a sunny day optimizes results and prepares your greenhouse for a productive spring restart. --- ## Its never too early to get a head start ## My husband and I planned a mid-week ski trip but on departure day I was still in my off finishing a time-sensitive project. We were staying overnight at the hill, it was still a workday, and the car was loaded up. There was no rush to get moving. 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