Your plant isn't being dramatic when it stretches for the window — it's reading the light. This week Tanya and Jos get into a red-shade-cloth vanilla farm in Hawaii, the real science of phytochrome and shade avoidance, and why cannabis growers manipulate far-red light on purpose. Plus: an AI plant-photo fraud scandal shakes the collector community, a Hawaiian botanist free-solos volcanic cliffs to save endangered plants by hand, two Australian orchids get pulled back from the brink, and Tanya drops a hot take on who actually gets to have an opinion about non-native gardening.
In this episode:
News — An AI-generated plant photo scandal rocks the collector community; field botanist Steve Perlman free-solos 3,000-ft Hawaiian sea cliffs to rescue endangered native plants; two Australian orchids (the Queen of Sheba orchid and the Rosella spider orchid) get major conservation wins; and a humbling lesson on humidity, monsoons, and what "houseplant" even means depending on where you live.
Main Topic: Red Light, Explained — What a lava-red vanilla farm in Hilo taught us about phytochrome, shade avoidance, and why your leggy pothos is just speaking a language plants have used for millions of years — plus how cannabis growers weaponize far-red light for bigger yields and higher THC.
Hot Take — Should Europeans stop planting palm trees? Tanya says the people criticizing them should look at their own backyard first.
Hot or Nah — Cymbidium goeringii 'Cheonjong', Philodendron 'Jupiter', and Alternanthera ficoidea (Joseph's coat) go under the microscope.
Weird Plants — A starfish-shaped Mexican vine (Dictyanthus pavonii), a South African micro-succulent with a flower 20x its own size (Oxalis bullulata), and a spiky Amaryllis relative found in a 64-square-kilometer sliver of the Western Cape (Brunsvigia radula).
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