T.H. Seeds: 42 Amsterdam Strains Since 1993

T.H. Seeds has been breeding out of Amsterdam since 1993, which makes it one of the oldest names in the Dutch cannabis seeds field. The shelf splits neatly in two: the 90s classics that built the brand, and the newer dessert crosses built on American cuts. Both halves still move, and the old ones outsell plenty of this year's hype genetics.

From a Canal-Side Info Shop to Europe's First Seed Shop

It started as the C.I.A., short for Cannabis In Amsterdam, an information centre rather than a seed shop. Robert C. Clarke, who wrote Marijuana Botany and HASHISH!, called what it grew into Europe's first seed shop and "the epicenter of the Cannabis universe". Thirty years on, the strains that earned that reputation are still in the catalogue: MK-Ultra, Bubblegum, HOG, French Cookies, S.A.G.E. If you're comparing Amsterdam seed banks, this one has the longest paper trail.

The Five We'd Put in the Tent First

Bubblegum is the obvious starting point: candy-sweet, indica-dominant, 110-125cm indoors, 8-9 weeks, 350-500g/m². Critical HOG crosses two award-winning parents, Critical Mass and Tennessee HOG, and needs only 55 days for 350-550g/m² of dense, greasy flower that smokes smooth with a proper hash-like flavour. Sage 'N Sour is the sativa pick, sandalwood with lemon on the exhale, 60-65 days. Strawberry Glue smells like a dessert shop and does 500-600g/m² indoors without asking for much. Pure Lemon Cherry is the biggest yielder of the group at 550-650g/m² in 9 weeks, with Pure Afghan keeping the internodes tight.

Sticky Buds Need Airflow, and Other Honest Warnings

Critical HOG is the one to watch. Those huge colas are the reason to grow her and also the reason growers lose them, so keep the grow room ventilated and get her out of heavy autumn rain if she's outside, otherwise you're trimming mould instead of buds. She's also a heavy eater, feed her properly or the yield drops. French Macaron sits at moderate difficulty rather than beginner-friendly, it wants topping and airflow around a dense canopy. If your space is tight or you'd rather not track a light schedule, the autoflowers cover the same ground: Auto Bubblegum, Auto Critical HOG, and AUTO MK-Ultra Kush.

Ordering, Packaging, and the Spelling Nobody Agrees On

People type it as TH Seeds, T.H.Seeds, or THSeeds. Same Amsterdam breeder, same shelf, you're in the right place. Orders go out fast in plain packaging with nothing on the outside naming what's inside, and we ship to the United States as well as across Europe. Compared to Sensi Seeds or Green House Seeds, the T.H. Seeds range is smaller and less encyclopedic, but it leans harder on American clone-only cuts crossed back into Dutch stock, which is why the newer half of this shelf tastes nothing like the older half. Buying one pack this year? Bubblegum. It has been in the catalogue since the early 90s and it still does the job.