Hop latent viroid is the quiet catastrophe of modern cannabis: an infectious pathogen that produces no dramatic symptoms while cutting potency and yield, sometimes by half. Industry testing programs keep finding it across a large share of commercial grows, and it spreads exactly how you would fear, through cuttings, tools and sap contact.
A seed buyer risks little, since HLVd is rarely seed-borne. A clone buyer inherits the entire disease status of the mother plant, which makes a nursery's testing program the most important fact about any listing, above THC, above price, above genetics. An infected cut is not a bargain at any price; it is a quarantine problem you paid to have delivered.
Both nurseries quoted here test their mother stock. Get Seeds Right Here maintains HLVd-tested mothers across its 500+ strain catalog, and Clones Up runs monthly PCR panels with quarantine intake on incoming genetics. That standard is the reason this manifest quotes two nurseries and not twenty.
Sterilize blades between plants, isolate new arrivals from an established garden for a week or two, and watch fresh cuts for stunted brittle growth. Testing upstream plus quarantine downstream is how a home garden stays clean over years rather than seasons.