Growing Spinach in a Greenhouse:

What PAR, CO₂, and VPD Taught Me About Leaf Thickness, Nitrates, and Staying Vegetative Spinach is honest. It doesn’t hide stress. It doesn’t recover easily. And it punishes excess faster than almost any other leafy green I’ve grown. When I first planted spinach in a greenhouse, I treated it like a cold-tolerant lettuce: moderate light, […]

Growing Zucchini in a Greenhouse:

What PAR, CO₂, and VPD Taught Me About Flowers, Pollination, and Continuous Yield Zucchini grows fast — sometimes too fast. When I first planted zucchini in a greenhouse, I assumed it would behave like an aggressive summer crop: lots of light, warm air, strong airflow, and everything else would take care of itself. The plants […]

Growing Eggplant in a Greenhouse:

What PAR, CO₂, and VPD Taught Me About Flowers, Fruit Shape, and Nighttime Stress Eggplant taught me patience. Compared to tomatoes or peppers, eggplants grow with confidence — thick stems, large leaves, and a willingness to tolerate heat. When I first grew eggplants in a greenhouse, I assumed they would thrive under strong light and […]

Growing Chili Peppers in a Greenhouse:

What PAR, CO₂, and VPD Taught Me About Flower Drop, Heat, and Real Yield Chili peppers taught me restraint. I had already grown sweet peppers successfully, so when I moved to chilies, I assumed I could simply push things a little harder: more light, warmer air, higher CO₂. The plants looked vigorous. Leaves were dark […]