Truleaf Insights

Brown inner lettuce leaves often signal tipburn. Learn why adding calcium may not help, how airflow affects calcium delivery, and what to check first.

Two very different fungi are both sold as 'cordyceps,' and they are not two grades of one product. Cordyceps militaris is the bright-orange club fungus growers actually cultivate on sterile grain, rich in cordycepin. Ophiocordyceps sinensis — formerly Cordyceps sinensis — is the wild Himalayan caterpillar fungus you basically cannot grow, now in a different fungal family and critically endangered from overharvest. This guide untangles the 2007 name change that split them apart, the chemistry trade-off between them (cordycepin vs. adenosine, nucleosides, and mannitol), why one is endangered and the other is the sustainable choice, what a 'cordyceps sinensis' supplement usually contains, and how to tell them apart on a label. Grounded in peer-reviewed research.

Rosemary is only reliably hardy to about zone 8, yet the thermometer is rarely what kills it. This guide covers rosemary's real cold limits, why freeze-desiccation and wet roots do more damage than raw cold, how to pick and protect cold-hardy varieties, mulching and wrapping in-ground plants, and overwintering in a container indoors — grounded in peer-reviewed plant physiology and land-grant extension guidance.

The winged bean is one of the few crops where nearly the entire plant is edible — immature pods, mature seeds, tuberous roots, young leaves, and even the flowers. This guide walks through each part, what it delivers nutritionally, why the ~20% protein tuber is so unusual, how the seed compares to soybean, and why what you grow it for should shape the variety you plant. Grounded in peer-reviewed research and institutional plant-resource references.

Winged bean and yard-long bean get confused constantly — similar climbing vines, similar-sounding names, sold under a tangle of aliases. But they are different genera, and the differences matter for how you grow them and what you get to eat. This guide gives you the fastest visual ID (a four-winged square pod vs. a round pencil-thin one), sorts out the edible parts (only one has an edible protein-rich tuber), untangles the flowering behavior that makes one refuse to fruit in a long summer, clears up the asparagus-bean-vs-asparagus-pea name confusion, and helps you decide which to grow. Grounded in peer-reviewed research and institutional plant-resource references.

Flowers open, then yellow and fall without setting fruit — or the fruit that sets rots at the bottom. These are two different disorders that growers constantly confuse. This guide untangles blossom drop from blossom-end rot, explains what really drives fruit set in tomatoes, peppers, cucumbers, and strawberries indoors and in hydroponics, and gives you a diagnostic checklist. Grounded in peer-reviewed research and university extension guidance.

Brown, slimy roots and a sewage smell in your deep water culture reservoir mean root rot has set in. This guide explains what actually causes hydroponic root rot — low oxygen, warm water, and a stressed root zone — how to triage the damage, a staged rescue protocol, and the multi-barrier prevention that keeps it from coming back. Grounded in peer-reviewed research and university extension guidance.

Indoors and under cover, there are no bees or wind to move pollen — so fruiting crops set poorly, drop blossoms, or grow misshapen fruit. This guide shows exactly how to hand-pollinate tomatoes, peppers, strawberries, cucumbers, and squash, with the tools, timing, and one climate limit hand-pollination can't fix. Grounded in peer-reviewed research and university extension guidance.

A research-backed spinach growing guide: why daylength — not heat — triggers bolting, how to time and feed a fast cool-season crop, and an honest look at hydroponic spinach. Grounded in peer-reviewed studies and university extension guidance.

Your hydroponic lettuce looks perfect but tastes like water. The cause isn't hydroponics — it's flavor chemistry and five fixable growing choices: EC, light, harvest timing, storage, and cultivar. A research-backed guide grounded in peer-reviewed studies.

A research-backed guide to planting garlic in fall: why garlic needs a cold period to bulb (vernalization), how to choose between hardneck and softneck for your climate, and exactly when to get cloves in the ground before winter.

A research-backed carrot growing guide: the 65-80 day germination-to-harvest timeline, the two mistakes beginners make, and an honest look at container and hydroponic viability.