T.H. Seeds: Amsterdam Cannabis Seeds Since 1993

First thing to clear up, because we get asked it a lot: the TH has nothing to do with THC. It comes from the crew who founded the company in Amsterdam, and searching for thc seeds will land you somewhere else entirely. T.H. Seeds is a breeder with a name, a city, and a 30-plus year paper trail behind it.

From a Cannabis Info Centre to Europe's First Seed Shop

It began in 1993, when the C.I.A. (Cannabis In Amsterdam), a cannabis information centre in the city, turned into a seed company. Robert C. Clarke, author of Marijuana Botany and Hashish, called it Europe's first seed shop and the epicentre of the cannabis universe. Add a run of High Times Cannabis Cup wins and you get one of the oldest Dutch seed companies still breeding under its original name. Our full cannabis seeds catalogue puts them side by side with every other bank we carry, if you want the comparison.

Old Company, Genetics That Keep Moving

Old-school doesn't mean dusty. Bubblegum came out of Indiana Bubblegum stock in the early 90s and still wraps flowering in 8-9 weeks at a tent-friendly 110-125cm indoors. Then there's the newer end of the shelf: French Macaron crosses Gelato 33 with French Cookies, Pure Lemon Cherry runs Lemon Cherry Pie into Pure Afghan for shorter internodes and 550-650g/m², and Mona Lisa pulls together Black Apple, London Pound Cake 75 and Kushmints 11. Same breeder, different decade.

Sandalwood, Hash Smoke and a Bakery Counter

Sage 'n' Sour tastes of sandalwood with lemony whiffs behind it, and the smoke goes down smooth before it hits properly hard. Critical HOG is the hash one, so loaded with resin that people press it rather than smoke it, with a flavour close to actual hash. Strawberry Glue goes the other way, sweet and creamy like a strawberry dessert, then parks you on the sofa instead of lifting you.

What Growers Say About T.H. Seeds

The word that comes up most in T.H. Seeds reviews is consistency. Grow Bubblegum twice and you get the same soldier-straight plant twice, which matters more than a headline number if you're running back-to-back cycles. Watch out for the big-bud strains, though. Critical HOG stacks dense flower clusters that will hold moisture, so it needs real airflow indoors and cover from heavy autumn rain outside, or you'll be cutting mould out of your harvest. French Macaron sits at moderate difficulty too, so it's not the one we'd hand a first-time grower.

Which Packet We'd Open First

If you've never grown before, Critical HOG: 55 days, forgiving, and it eats everything you feed it. If you want the biggest indoor return from the shelf, Strawberry Glue at 500-600g/m² over 8-9 weeks. And if you'd rather skip the light schedule altogether, the autoflowering versions of the same lines are here, Auto Bubblegum and Auto Critical HOG, which finish quicker than their photoperiod parents at the cost of a bit of size. Whichever you pick, start with one packet and learn how it grows before you commit a whole tent to it.