Green point seeds, the dank team, seeds here now, Oregon elite seeds, dr greenthumb, midweeksong, Herbie's.
stay away from THC bay, sour patch, seed supreme. The bad ones listed always delivered for me but they repackage and have bad rep for swapping out seeds.
There are a hundred more companies online but always google reviews and read posts.
As for blue dream and sour diesel, Dr green thumb has an east coast sour diesel that will likely do the trick in short order. And I'll get flamed but hso blue dream was a huge producer.
Keep in mind green point seeds dynamite diesel and black gold are diesel star dawg crosses but if you know the chemdawg history youll notice that sour diesel came from the same bag of seeds as stardawg so its basically a back cross.
Green point is an american company with a new single seed buy option and CONFIRMED chem/diesel genetics. Also they usually have seeds at your door in three days, take credit cards, and have a near perfect germ rate