HashBerry is a pretty dense indica, so I wouldn't recommend it for an outside grow.
If you want to see how it grows check out the link in my sig...I'm growing some now along with Super Skunk.
As far as flavor/potency goes on the HB...it's about average I'd say. Def more of a stony indica ride, and the flavor is not really like they describe it. It's more of a lemon-lime diesel smell. Barely any taste on the inhale, but a nice lime-diesel flavor on the exhale. Medium potency, very clear-headed, more of a body stone. Good legs though at 2-3 hour duration.
And last, regarding Mandala in general...I used to talk up Mandala all the time to everyone because I really dug their whole idea on the landrace strains and of course you can't beat the prices. So I ordered 10 HBs and 10 White Satins. Out of the 10 HB seeds 3 germed and lived and 1 ended up being female. So I still have that strain around. The White Satin however was a different story. About 8 of the 10 germed, and then about a day later died. NONE of them lived. It could have been the batch that I got from the seedbank or something, but I just chalk it up to not a lot of heads order Mandala seeds so they sat around a lot longer and got old. To me it just really seemed like they were old. And the packaging was just a slip of paper with their logo on one side, and a pic of the strain and brief description on the reverse. The seeds were in a little dope baggie scotch taped to the slip of paper. Not very professional if you ask me.