Definitely check them at 7 weeks. Just because a plant 'seems' to be heavy Sativa doesn't mean that it's flowering period is long like a pure Sativa. Once those Sativa's get crossed with Indica's there flowering time generally drops drastically to the 8-9 week mark. This isn't always true, but it does happen a lot and you don't want to miss the window.Hey man, some plants go that long. Keep us posted. Check them at 7 weeks and see where they are at.
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