Doctor Greenthumb has gotten good reviews for some of his strains but I would think twice about trying his Matanuska Thunderfuck. I ordered a pack of seeds and for one they took a month to get to me. Then after trying to germinate the seeds for 2 weeks, only 2 of them germinated. I wrote to Doc about it and he said send the seeds back and heā??ll replace them. I thought it was odd that he wanted the bad seeds but I sent them back to him. I waited a month and no replacements came. I wrote to Doc again and he claimed that he didnā??t get the seeds so Iā??m screwed. So Iā??m out $240. Iā??ll never order from Doc again and instead Iā??ll try Sagā??s Matanuska Tundra. Itā??s a lot cheaper and has gotten good reviews. :thumbsup: