About ShadeThrive
Most gardening advice is written for a sunny border, and it quietly falls apart the moment you try to apply it to the north side of a house, the gap between two garages, or the ground under a mature oak. How dim, exactly, is “shady”? Which plants will actually take hold there, at your hardiness zone, in your soil? How much less water does a shaded bed need than the same plant would in full sun? Is that mossy patch worth encouraging, and how much material would it take to spread it on purpose? How much of a bed does a tree’s canopy really cover, and how many plants fit once you know? None of these questions are difficult, but they don’t have obvious answers either — which is the gap ShadeThrive is built to close.
Rather than long articles you have to translate into your own garden, the site is built around six small, single-purpose calculators. The Light Level & Lux Guide turns a light-meter reading into an estimated Daily Light Integral and a shade category. The Shade Plant Selector filters a curated list of real shade-garden plants by your hardiness zone, light level, and soil moisture. The Watering-in-Shade Calculator derates a full-sun watering baseline for your plant, your shade level, and your soil, then subtracts recent rainfall. The Moss Coverage Calculator works out how many transplant patches or how much slurry mix a given area needs. The Canopy Cover Calculator estimates what percentage of a bed a tree’s crown actually shades, plus its shadow length at a given sun angle. And the Plant Spacing Calculatorturns a bed’s dimensions and a spacing requirement into a plant count, comparing a square grid against the more efficient triangular layout.
Beyond the calculators, the blog and learnsection cover the reasoning behind shade gardening — reading your light, caring for shade perennials, planning a woodland-style bed, and the ecology of a forest floor — and the Museum of the Shade Garden is a browsable collection of ferns, hostas and shade perennials, moss and groundcover, and woodland wildflowers, with every entry, image, and fact drawn from Wikipedia and Wikimedia Commons.
A few things worth stating plainly. ShadeThrive is an independent site, not affiliated with any nursery, extension service, or garden-supply brand. It is supported by advertising, which is how the tools stay free with no account required. Every result the tools produce — a light category, a plant shortlist, a watering estimate, a coverage count, a shadow length, a plant count — is an educational estimate built on standard formulas and published plant data, not a substitute for checking your own soil, light, and local climate. The site covers cultivation facts only and makes no plant-toxicity or medical claims. If something looks off in a tool or an article, or a calculator is missing that would help, the contact page is the place to say so.