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Barrina Research Program
The Best Grow Light Spectrum for Tomatoes
We grew one dwarf tomato under five grow-light spectra. Here's which grew the sturdiest plants.
Barrina Research Program
Grow Lights for Carnivorous Plants
Twelve weeks, four light levels, one butterwort: how much light carnivorous plants really need.
Barrina Research Program
I Grew 12 Houseplants Under 4 Light Levels for 3 Months. Here's the Setup.
Twelve houseplants, four light levels, three months: the setup behind our grow-light intensity experiment.
Barrina Research Program
The Brightness Map: Which Houseplants Belong Under Your Strongest Light
Which houseplants belong under your strongest light? Our 12-species trial sorted them into three zones.
Barrina Research Program
Your Echeveria Wants It Blasting: Compact Rosettes and Pink Stress Color
Strong light kept our Echeveria tight and pink. Here's the intensity that worked best.
Barrina Research Program
The Shade-Lovers' Ceiling: Where Caladiums and Alocasias Burn
Caladiums and alocasias grew best at the dimmest light we tested—and shrank under strong light.
Barrina Research Program
The Fussy Ones: A Butterwort's Sweet Spot and a Staghorn's Stretch
A butterwort with one clear sweet spot, and a staghorn fern whose best light depends.
Barrina Research Program
Five Light Colors, One Tomato: A Spectrum Test on Dwarf Tomato
Five grow-light colors, one dwarf tomato: red-rich light stretched plants; GrowForce® Spectrum kept them compact.
Barrina Research Program
How Much Light Do Foliage Houseplants Need?
How much light do foliage houseplants need? Our Anthurium trial points to 80–200 PPFD.