Quick Answer:

To stagger your harvest and maximize your greenhouse space, start cold-tolerant crops like cauliflower, broccoli, spinach, arugula, and green onions in mid to late summer, filling gaps as summer plants finish. This double-cropping method ensures a steady supply of fresh produce through fall and winter without needing supplemental heat. By seeding early, transplanting strategically, and using light frost protection like row covers, you can extend your growing season and enjoy bug-resistant, off-season harvests.

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The peak of summer brings the best of all worlds for the greenhouse gardener. Early tomatoes, the first zucchini and loads of strawberries. But there is another thing summer brings. The chance to start winter vegetables in your greenhouse.

BC Greenhouse Builders featured in House and Home Magazine

We are beyond proud that BC Greenhouse Builders, North America's leading manufacturer of hobby greenhouses, is featured in May 2022's issue of House and Home! Author Wendy Jacob scribed "This Dreamy Greenhouse Is Also A Chicken Coop And Party Room", about our client, Lisa Moody's, dream of having a combination greenhouse and chicken coop in her garden.

Quick Answer:

Why grow your own lettuce this season? Growing full-size head lettuce in your greenhouse garden brings unmatched freshness, variety, and taste compared to store-bought bagged greens. Head lettuces like romaine, butter, crisphead, and leaf types offer richer textures, better crunch, and longer shelf life. They’re ideal for salads, wraps, and sandwiches—and thrive in small spaces between larger greenhouse crops. With easy care, seed-saving potential, and improved nutrition from organic soil, homegrown lettuce is a flavorful, sustainable upgrade to your garden. Rediscover the joy of harvesting crisp, nutrient-packed greens right outside your door.

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If you watch old re-runs on Netflix you have seen how fashions and styles have changed dramatically since Seinfeld was filmed in the 1990s. The same is true for food – especially lettuce.

I first wrote about “novel” mesclun greens (mixed lettuce) in 1995. Since then, they have become so popular, that bagged lettuce is the only lettuce most people know. And this is too bad because lettuce greens or bagged greens are really just immature greens like kale and lettuce leaves. So, for something completely novel, why not go back to the future? Grow full-size head lettuce in your Greenhouse Garden this year.

Most people don’t remember life before the small bags of lettuce leaves so commonly sold now at big box stores and local farm markets. But if you want the crunch of lettuce in a BLT sandwich or if you want to replace Pita bread with a Keto-friendly lettuce leaf wrap for lunch, then start growing your own heads of lettuce this season.

Quick Answer:

How do you grow cauliflower in a greenhouse for perfect results year-round? Growing cauliflower in a greenhouse ensures consistent conditions—steady temperature, even moisture, and protection from extreme heat—leading to larger, sweeter, and more reliable harvests than outdoor crops. Start seeds indoors, stagger plantings to avoid a glut, and choose self-wrapping or colorful varieties like Veronica or Susanna for visual appeal and flavor. With drip irrigation, airflow, and soil amendments, your greenhouse can produce A+ cauliflower from spring through winter.

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Another Reason to Love the Greenhouse: Perfect Cauliflower Growth

Lennie tracked me down at a party. “It’s my cauliflowers,” she sighed. “They are small and button-like instead of big like at the store.”

 

Do you have a greenhouse roof vent that is no longer opening or not opening enough?

Growing Soil with Hügelkultur

When I moved homes and built a new greenhouse, I was in for quite a surprise. The natural soil on my new lot is sand. Pure, yellow sand. This means it drains really well. It also means it does not hold nutrients to feed my plants.

Do you have a greenhouse roof vent that is no longer opening or not opening enough?

Over the years, the piston moving through the seals gradually wears the seal material away, allowing a gradual seepage of wax out of the cylinder. This reduces the pressure within the cylinder and needs to be replaced. But it could also be that the wax in the cylinder just needs a simple kickstart and a warm bath. Here is a tip to see if you can get them working again:

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.

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Schedule Your Greenhouse Garden Now

Showing off my arugula (also known as rocket) on Instagram leads to a lot of questions about my greenhouse and what I currently have growing. 

Quick Answer:

What Are the 5 Proven Ways to Boost Your Flower and Food Greenhouse Garden?
To maximize your greenhouse garden, start by seeding early, transplanting strong seedlings, dividing mature plants, and taking cuttings to multiply your crops—all under ideal indoor conditions. These techniques help you grow more flowers, food, and even potatoes or grapes with better success and less risk than outdoor planting. Most importantly, enjoy the space—your greenhouse is not just a garden, but a peaceful, productive retreat that brings warmth, growth, and joy year-round.

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Five ways to raise your flowers and food

Seed:

Nature hates a gap. That’s why weeds fill in every nook and cranny available to them outdoors. Sprinkling desirable seeds outside as the snow thaws on the south side of your home or Greenhouse Garden this spring lets you copy nature’s best efforts. Inside your greenhouse, scatter seeds on top of pots or flats. A light dusting of soil and a sheet of glass laid flat over trays keeps the humidity high until the seeds grow.