Heritage
These genetics are the culmination of 30 years of intensive breeding — crossing and selecting only the best of the best.
California · 21+
This is Greenshock’s house genetics site. Licensed work, adults 21+ only.

House genetics
House cultivars selected in the Northern California sun — licensed genetics, seed, and tissue culture for industry partners.
Photo: Greenshock Farms
These genetics are the culmination of 30 years of intensive breeding — crossing and selecting only the best of the best.
Cutting-edge genetics available under limited license to industry partners.
With tissue culture partners, we bring award-performing craft genetics to licensed commercial partners: clean, uniform, and scalable.
Our tissue culture partners: SegraConceptionZennetix
Regular seed sales go through Tangled Roots — same breeding heritage, ready to plant when you are.
From the rows
Mark still does the selection in the Nevada County nursery, by eye and by nose, and we only keep seed from plants that hold up. The Nevada County farm is home to our Greenshock Pheno Ranch. We pheno hunt and cross-pollinate hundreds to thousands of strains there each season. The same selections go to Mendocino County, where candy and gas both have to take the mountain weather. Two counties, two microclimates — that’s how we vet a line in research and development before it leaves as licensed genetics.
Nevada County
This is where those hunts start — trays, seed, and the keepers we still trust. We only keep what earns another run. Our Nevada County farm's intense sun and heat provide an explosive expression of each plant's unique character.
Mendocino County
The same selections take a full outdoor season here, in the Emerald Triangle's cool moist air. A great test of mold resistance before being put into wide-scale production.
Tissue culture
Tissue culture is how we take a plant we already trust and put it into a clean bank. With culture partners — Segra, Conception, and Zennetix — that cut comes out clean, uniform, and scalable: the same plant, ready for licensed commercial partners.
If you already run a licensed canopy and want a Greenshock cultivar in culture, say so on the form. Tissue culture partnerships are available alongside our seed and licensed genetics programs.
House genetics
Lines we still stand behind, grouped for review — one line on each.
Current hunt on the Pheno Ranch. These are not released as licensed lines yet.
Purple POG and Frosty POG are two new standout expressions of our Passion Orange Guava, picked out in 2026 at the Greenshock Genetics Pheno Ranch in Nevada County.
Purple POG and Frosty POG are two new standout expressions of our Passion Orange Guava, picked out in 2026 at the Greenshock Genetics Pheno Ranch in Nevada County.

X18 is an old-school Pakistani hash plant line tracing back to the Tom Hill X18, rebuilt from a single purple, rock-hard, mold-resistant female. Our CBD-dominant selection has tested around 18% CBD to 6% THC with over 2% myrcene, and won two silver medals (CBDa and myrcene) at the 2025 California State Fair.
Paul Mehl / Greenshock Farms

Bakery crosses Purple Candy Cane with Mint Chocolate Chip for a nose of berries and dough with mint, painted in purples, reds and blues. Its big, easy-growing frame spaces the flowers out for light and airflow.
Paul Mehl / Greenshock Farms

A Purple Candy Cane × Mint Chocolate Chip cross: berries and dough with mint, and purples in the color.
Paul Mehl / Greenshock Farms

This Tropical Sleigh Ride × Mint Chocolate Chip line grows big and vigorous, with a layered profile of tropical fruit, earth and gas and strong resistance to mold and mildew.
Paul Mehl / Greenshock Farms

Paul Mehl / Greenshock Farms

Paul Mehl / Greenshock Farms

Paul Mehl / Greenshock Farms
Newer named house lines that are out, but not the heritage core.

Frank Hill is part of Greenshock's 2026 production lineup. Grown with our friends at Soma Rosa Farms, it took bronze for caryophyllene at the 2026 California State Fair.
Paul Mehl / Greenshock Farms

Saddlebags spent years in selection and field testing before it reached a jar, and it took silver for caryophyllene at the 2026 California State Fair. Expect a grounded, savory, gas-forward nose with woody undertones on dense, frosted flowers.
Paul Mehl / Greenshock Farms

Skunk Gas came out of our 2023–24 winter pheno hunt, a four-way cross of Green Lantern, Double OG Chem, Long Valley Royal Kush and '98 Super Skunk that reeked of skunk and gas from across the garden. High Times named it a June 2026 Strain of the Month for its “heavy skunk-diesel-menthol aggression,” and it anchors the Garcia Hand Picked California launch.
Tangled Roots / Greenshock Farms catalog
Frosty the Gas Man crosses GMO with Long Valley Royal Kush and Double Chem OG. It's indica-leaning, with chunky emerald-green colas under thick silver frost and pungent fuel notes over a savory backbone.

Paul Mehl / Greenshock Farms
Cultivars on this page with a Golden Bear on the published Awards record.

2026 Golden Bear — Best Sun Grown / Outdoor Flower.
Paul Mehl / Greenshock Farms

Passion Orange Guava is the green phenotype of our Tropical Sleigh Ride, an ocimene-dominant selection loaded with orange and guava. It won the 2019 Emerald Cup Breeder's Cup and two California State Fair Golden Bears for ocimene (2022, 2023), and took ocimene gold again in 2025.
Greenshock Farms / Passion Orange Guava
G Lime Burst is a high-CBD, 3:1 CBD:THC selection. It took the Golden Bear (Best of California) for CBDA at the first California State Fair Cannabis Awards in 2022, along with outdoor gold, testing at 18.4% CBDA.
California State Fair / Cannabis Awards gold-tier lines already on Genetics.

Double Lantern brings Ridgeline's Green Lantern together with Double OG Chem and Long Valley Royal Kush for pure heavy gas: diesel, spicy earth and pine. It is a back-to-back caryophyllene gold medalist at the California State Fair (2025, 2026), and one State Fair entry hit 5.2% essential oil and a state-high 2% caryophyllene. The heavy, stacking colas are the earliest finishers in Mendocino County.
Greenshock Farms / Double Lantern #19

The cut that started the Lantern gas lines. 2024 California State Fair Sungrown Caryophyllene Gold.
Paul Mehl / Greenshock Farms
Foundation and long-standing house lines.

Purple Candy Cane, created by Mark in 2015, is named for its purple stalks and a Christmas-morning scent of peppermint and orange. It placed 3rd and then 2nd in Emerald Cup flower in 2015 and 2016, and it is the mother line behind Tropical Sleigh Ride.
Paul Mehl / Greenshock Farms

Tropical Sleigh Ride is Purple Candy Cane crossed to a rare Pineapple from Mean Gene. It took the 2017 Emerald Cup for highest total terpenes at 4.8%. This ocimene-dominant line throws guava, mango, papaya, orange and pine, and has proven itself from the Sierra foothills to 110-degree San Luis Obispo. #162 is one of our selections from the line.
Greenshock Farms / Tropical Sleigh Ride #162
Peppermint Sleigh Ride smells like a Christmas wreath and fresh-baked pie with a sprinkle of cinnamon. It took 3rd for sungrown flower at the 2023 Emerald Cup and launched as a Solful exclusive during SF Weed Week 2024.
Orange Terpentine crosses Purple Candy Cane with Long Valley Royal Kush for a nose like fresh orange peel soaked in gasoline. It placed at the 2021 Emerald Cup in both sungrown and personal-use flower, and critic Ngaio Bealum called its deep orange creaminess his favorite new flavor of the year.

Dr Greenshock is a balanced 1:1 CBD:THC original, the only CBD expression Mark found among about 100 phenotypes of Lavender × (Bubba Kush × Recon). It is myrcene-rich, smells like earthy kush, mint and eucalyptus dipped in honey, and shrugs off fall rain outdoors.
Paul Mehl / Greenshock Farms
Regular seeds through Tangled Roots. Licensed genetics and tissue culture go through the farm.