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June 13, 2026 11:31am EDT

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Your Weekly Cannabis Update

A curated look at the latest news, research, and perspectives shaping the cannabis space.

Cannabis Calcium Deficiency: Signs, Fixes and Prevention

Article by Seedsman • Growing | Cultivation

A calcium deficiency doesn't usually start with panic. It starts with something small growers almost ignore. Maybe a faint-rust-colored speck, or a slow patch of growth.

Most growers don't name it at that stage. They adjust light, or tweak feeding. Then one morning it's clearer: the problem's not going away. It's getting worse.

Cannabis calcium deficiency has officially entered the chat. Not loudly - but early enough that it can still be corrected cleanly - if it's recognized in...

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We're teaming up with Zennetix to bring the Seedsman Community an exclusive giveaway while we explore one of the most exciting developments in modern cultivation: tissue culture.

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Community Spotlight

Tissue Culture ➜

For decades, cannabis growers have relied on a simple formula around cannabis cloning: keep a healthy mother plant, take cuttings, root them, and repeat.

The Future of Seeds ➜

Many of you will know that legislation is due to take effect in the United States in November 2026 that could have serious consequences for the...

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