What is the Best Soil for Greenhouse Growing?

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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.

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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?

Quick Answer:

What Are the 5 Tips for Keeping My Greenhouse Toasty This Winter?
To keep your greenhouse warm and your plants thriving in winter, start by growing cold-tolerant crops and installing an electric plug with a thermostat to control supplemental heat from soil cables or space heaters. Add frost protection by layering Agribon fabric, build mini-insulated zones for tender plants, and use old-school lights or warming tools for targeted heat. Finally, keep air circulating year-round with fans to prevent cold pockets and strengthen plant growth.

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Keeping Your Plants Cozy This Holiday Season

Imagine my surprise when a small hole we drilled through our greenhouse foundation became a runway for mice. We pulled an extension cord into my greenhouse through that hole and the tiny gap became a neon sign for rodents.

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.

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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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Clearing greenhouse waste on a small scale involves chopping bulky plants into smaller pieces to speed composting, using tools like a chipper and rodent-proof compost bins such as the Speedibin for faster, pest-free decomposition. When animal assistance isn’t available, this method efficiently manages large volumes of plant debris, turning waste into valuable compost in about six months. Proper waste management not only keeps your greenhouse tidy but also supports sustainable gardening by recycling nutrients back into your soil.

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Arnold is always hungry. And some of his favorite foods are the fruits and vegetables I grow in my greenhouse.  He also eats the plants of the tomatoes and squash I grow. He gently pokes around, licking up the small green fruits first and then chomps down on the whole tangled twisted plant.

Quick Answer:

Preparing your greenhouse for fall involves maintaining appropriate night temperatures for different plants, thorough cleaning to prevent pests and diseases, and proactive pest management using safe insecticidal soaps, sterilized soils, and yellow sticky traps to ensure a healthy growing environment.

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There are many plant varieties and they all require different night temperatures to sustain their growth.

Greenhouse night temperatures

The Benefits of a Home-Attached Greenhouse

With convenient access to water and power and designed to maximize the heating benefits of your home, the attached greenhouse is a must for those wanting to extend the season and enjoy the view into the garden. BC Greenhouse Builders offers a lean to greenhouse kit and a gable design for home-attached greenhouses. A lean-to is a roof that has a single slope with its upper edge adjoining a wall or building. A gable-attached greenhouse is a typical freestanding greenhouse with the gable end removed and attached to a wall.

Quick Answer:

What Are the Tips to Maximize a Bumper Harvest?
To maximize your fall greenhouse harvest, start fast-growing crops like radishes, spinach, and mustard in late summer, and experiment with resilient plants like sesame for high yield with minimal water. A greenhouse extends the growing season beyond outdoor limits, especially in northern climates, allowing gardeners to produce fresh food well into fall. By donating excess produce, greenhouse growers can also support food security and uphold the human right to access fresh, healthy food.

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What would Donna do?

New Crops and Bumper Harvests

I’m flying home through Calgary into Comox on my way back from a speaking gig. It’s late August and the pilot warns us: it is snowing close to Calgary. In August.

Quality, Strength, Longevity, Service, and Warranty: The 5 Principles Behind BC Greenhouses

Quick Answer:

Why Should I Start My Fall Crops Now?
Starting fall crops in August maximizes your greenhouse space by replacing summer plants like zucchini or lettuce with fast-growing cool-season crops such as radish, kale, peas, and spinach. This strategic transition extends your harvest into fall and winter while allowing you to propagate strawberries, collect seeds, and prepare transplants. By planning now, you create a continuous cycle of fresh food, making your greenhouse more productive year-round.

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August Plants

August crops are growing so fast that I should have a time-lapse camera to record the speedy growth. It’s a good thing I’m home all month to watch the changes and get the next crops planted and growing.  Check out my tips to grow your own food too!

Quick Answer:

What are the tips for managing and double cropping in a greenhouse to prepare for winter? Effective greenhouse management in summer involves double cropping fast-growing plants like radishes between slower growers such as peppers, using trap crops like beans to monitor pests, and starting winter-hardy crops early to maximize space and season length. Planning ahead by maintaining seedlings in flats and supplementing nutrients ensures continuous, healthy growth, allowing gardeners to transition smoothly from summer to fall and winter crops. This strategic approach optimizes greenhouse productivity year-round and helps prevent common pest issues.

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Surprisingly, Summer is the perfect time to prep for winterization

Managing your winter greenhouse with crops coming and going is a bit of an art form, so please bear with me. It involves starting seeds directly in greenhouse soil and also starting seeds in flats on shelves or potting benches.