A Brazilian community newsletter about grow lighting for plants, covering the basics of PAR, PPFD and DLI for beginners. It also includes a light-requirement database for common plants and announces an update to the Photone smartphone light-measurement app.
Website: https://photone.com.br/
A plant nursery owner writes personal essays on gardening, plants and the writing life, drawing on seventeen years of hands-on experience. Readers get practical seasonal advice, such as which perennials to leave standing over winter and how seeds germinate, alongside reflective storytelling.
A paid-membership garden publication offering essays and podcast-style episodes by working gardeners and designers, including conversations with authors and the James & Joe Garden Show. Readers get humorous, personable discussion of garden design, tools and books.
Arcana Solis shares practical guides for indoor growers and horticulturists, with a focus on measurement tools and growing infrastructure. The sampled issue gives step-by-step instructions for calibrating a hygrometer with the salt test, including a reference chart of relative humidity values.
Product newsletter from the Photone grow light meter app, mixing app update announcements with explanations of PPFD, DLI and how phone-based measurement compares with professional PAR sensors. Readers get practical guidance on measuring light for plants, alongside promotional comparisons favouring the app.
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