SS03 (Trichocereus knuthianus)
The SS03 Trichocereus is a clone that was and still is distributed by Sacred Succulents in California. It is a Trichocereus knuthianus that is very similar to the other Knuthianus forms that are available sometimes. The plant has strong spines and very typical V-notches that make it easy to spot. Seed grown seedlings grown from SS03 seeds look very spiny and have thin & yellow spines.
This is Sacred Succulents description from their catalogue. You can get this plant through their website at sacredsucculents.com:
Upright columns to 16′ or more. Dark green stems up to 6″ in diameter. Areoles bear 7 – 9 radial spines up to 1″ and one stout central spine up to 2″ long. White nocturnal flowers. Appears to be a form of Trichocereus peruvianus. Cold hardy to at least 25° Fahrenheit.
Photos: Noah Reams