The House

Before it was a plot, the House was a way of working: measuring before adjusting, drawing before planting. It was learned along the way — here it is, in order.

The journey

2010 — I start growing. That year, I finish a BTS (two-year technical degree) in internal combustion engines and enter the Université Bretagne Sud, where I study for a DEUG (two-year university degree) in energy engineering until 2012. Nothing agricultural. What remains of these two programs is a habit: you don’t tune an engine by looking at it, you tune it on measurements.

2012 — Scheduling and production planning at an industrial joinery company: eighty-five people, five production lines. Three months, from August to October, doing nothing but shop-floor coordination. That is where you learn that a farming season is a workload plan.

2013-2014 — Two seasons in California, Mendocino County. 2013, the discovery, at Spy Rock, on the ridges above Laytonville. 2014, the full season, at Lucky Vista Farm, in the Redwood Valley area, farther south in the same county: production management, from earthworks on the land all the way to the harvest — designing a plot, laying it out, running an entire cycle. Two places in the Emerald Triangle, two ways of doing things.

What you learn there is not a cultivar recipe. It is a way of designing a plot before planting anything in it: straight lines, access paths, consistent spacing, a growing method repeated identically from one plant to the next. The rest — the calendar, disease pressure, water management — does not travel. What follows on this page explains why.

2015-2018 — R&D manager of the CBD division of L’Chanvre, in Gouarec, eight miles from here. Setting up the production and processing division, R&D on textile fiber, hulled seeds, flours, oils, press cakes, proteins. So the Kreiz Breizh is not a place where I settled: it is a place where I was already working.

2015-2017 — Alongside, designing and setting up a self-sufficient vegetable garden for an artists’ community in Senegal.

2019-2022 — Living-soil production in Spanish Catalonia for growers’ associations, and seed selection with a farm in Mendocino County.

2021 — First business, as a sole proprietorship.

2022 — The Trémargat site: fallow land and meadow.

2023 — The company, Pinnacle Solutions EURL, and the first crop on the plot.

2024 — That first harvest wins, in April, first prize at the CBD Platinum Cup in the outdoor category — outdoor being the growing method the House calls Full Sun.

Since then, the House has had only one plot, one grower and twelve cultivars. What is sold here was grown here.

Four growing methods, one craft

Full Sun, Sun Dep, Greenhouse, Light Dep. The plot takes them on one after another — Full Sun from 2023 to 2025, the first Sun Dep in 2025, the first Greenhouse cycle this fall, Light Dep in March 2027. None arrives here to be tried out: each was run and mastered beforehand, here or on the farms the House supports.

This is the craft passed on through consulting, and it can be read on the ground — Canabec Ar Leur explains what each growing method demands in this precise place.

What they say

« Il choisit bien ce qu’il va faire pousser, et ce qu’il choisit finit très expressif, choyé et bichonné. »

“He chooses carefully what he is going to grow, and what he chooses ends up very expressive, cherished and pampered.” (our translation)

Oro Oro, Testeur de CBD — tasting of September 8, 2026. Read the article

What California teaches, and what it does not

I am often asked what a Mendocino terroir has to do with a Kreiz Breizh terroir. Here are the figures, side by side.

Swipe the table →

The nights are alike everywhere. The days are not. July lows fall within about three degrees of one another: 54.5 °F in Trémargat, 52.9 in Spy Rock, 56.1 in Redwood Valley. The gap between day and night, on the other hand, ranges from seventeen degrees Fahrenheit here to thirty-nine there.

The same distance to the ocean give or take a few miles, the same summer lows, the same day length at the equinox, annual rainfall of the same order. That is enough for the way of managing a soil, feeding a plant and drying it to travel from one place to the other.

And then summer flips. Over there it is dry — less than an inch of rain in three months at Spy Rock, less than half an inch at Redwood Valley. Here, seven and a half inches fall, over twenty-nine days.

Botrytis does not follow latitude: it follows the humidity of the nights. At Spy Rock, on the ridge twenty-two miles from the ocean, it arrives late — from the end of September the nights turn very humid, the rain comes back in earnest, and the spread between day and night makes moisture condense in the flowers. At Redwood Valley, seven and a half miles farther from the coast and on a valley floor, mornings sit at 73% and almost never pass 95%: the constraint there is heat and drought, not condensation — eighty-three days a year above 90 °F. Here, in Brittany, it runs all summer long.

The season that taught everything took place at Redwood Valley — of the three places, the one least like Brittany. That is precisely why what you bring back is a method and not a calendar. A cultivar tuned to the photoperiod of Mendocino County flowers later in Brittany, and finishes in an October with nearly five inches of rain. That is exactly why the controlled-photoperiod growing methods exist on this plot: they are not a refinement, they are the translation — see Canabec Ar Leur.

Sources: Météo-France, Rostrenen station, 1991–2020 normals; NOAA, 1991–2020 normals — Covelo (1,414 ft) and Laytonville stations for Spy Rock, Ukiah Municipal AP (600 ft, nine miles to the south) for Redwood Valley; humidity measured hour by hour at the LAYC1 (Laytonville) and KUKI (Ukiah) stations, summers 2019–2025. Day lengths are calculated for the three latitudes.

Awards

Two national awards in CBD flower competitions

First prize · CBD Platinum Cup, CannAgri trade show, April 2024 — Legendary Platinum OG Diesel Edition, outdoor category. The competition has since gone international.

Third prize · Analyse Cru, February 2024 — Legendary Platinum OG Diesel Edition, outdoor category.

Two competitions judged on open-field flowers grown Full Sun — with no controlled light, rain or temperature: the soil and the growing method do everything.

Legendary Platinum OG is no longer grown. What won the award was a growing method on a plot — neither has changed.

The growing method that won in 2024 is the one that produces today’s batches. See the flowers for sale.