Every clone tested for HLVd.
No exceptions.
Hop Latent Viroid is the most damaging pathogen circulating through today's clone market — silent, symptomless for weeks, and capable of cutting your yield in half. We don't ship a single clone whose mother hasn't passed PCR testing.
Shop Clean Clones →From Tissue Culture to Your Door
1. Tissue Culture Origin
Mother stock starts in a sterile lab medium, regenerated from clean tissue samples — not from older mother plants that may carry accumulated pathogens.
2. qPCR Pathogen Panel
Every mother is tested for HLVd, HpLVd, Fusarium oxysporum, Pythium ultimum, powdery mildew, russet mites, and root aphids before producing clones.
3. Documented Batch IDs
Each clone ships traceable to a specific test batch and date. The clean-stock chain is documented from mother to your delivery.
Most Recent COA: 100% Clean Across 335 Samples
Every clone we ship is traceable to a real lab COA. Our most recent batch — order #3122 from 3R Testing Biotech Solutions — tested 335 samples for Hop Latent Viroid via TaqMan RT-PCR. All 335 came back negative.
View COA #3122 →Frequently Asked Questions
What is Hop Latent Viroid (HLVd)?
Hop Latent Viroid (HLVd) is a small, infectious RNA pathogen that infects cannabis without producing visible symptoms in early stages. It silently degrades the plant’s metabolism — cutting yield by 30-50%, reducing terpene and cannabinoid output, and weakening overall vigor. Once a clone enters a grow infected with HLVd, the viroid spreads readily through tools, water, and physical contact.
How do you test for HLVd?
We use qPCR (quantitative polymerase chain reaction) testing on every mother plant before it produces clones. qPCR detects HLVd RNA at extremely low concentrations long before symptoms would appear visually. A clone whose mother passes qPCR is documented as "clean" for that batch.
What other pathogens do you test for?
In addition to HLVd, mother stock is screened for HpLVd (Hop Latent Viroid), Fusarium oxysporum (root rot), Pythium ultimum (damping-off), powdery mildew, russet mites, and root aphids. The clean-stock program is multi-pathogen by design.
Is tissue culture the same as cloning?
No. Traditional cloning takes a cutting from a mother plant and roots it. Tissue culture starts from a small plant tissue sample, grown in a sterile lab medium under controlled conditions. Tissue culture lets us regenerate genetics from clean stock and helps eliminate accumulated pathogens that traditional mother-plant systems carry forward over time.
How do I keep my grow HLVd-free after the clone arrives?
Sterilize tools between plants. Wash hands before handling. Avoid mixing plants from unverified sources with our clean stock. Quarantine any clone from any source for at least two weeks before introducing it to your main canopy. Most HLVd outbreaks in home grows happen because a single contaminated clone from another source touches the same scissors as the rest of the plants.