Glad to hear that you are interested in the Grapefruit, lovely choice.
Look, to be honest with you I rather suggest to take the Outdoor Grapefruit. As the name says it is perfect for outdoor and it is ready in 7-9 weeks of flowering.
But because of the fact that you live at 42 N I believe that also the normal Grapefruit can work well, always if the weather is kind of acceptable of course. The flowering period is more or less the same of the Outdoor Grapefruit too.
The best anti-mould strains are Red Purps, Purple Maroc and Easy Sativa too but the Outdoor Grapefruit can be definitely included in these group too
Hope I have been of some help,
All the best,
Originally Posted by 'Boogieman'
Basically I'm looking for potent sativa's that finish relatively early in my climate in the Midwest at 42°N. I have read some really good reviews with Female Seeds Grapefruit being a early sativa that actually has good potency. I have read mixed reviews about how well it does outdoors but honestly I'm willing to fight mold for something potent. Has anyone grown grapefruit in or outdoors?