Are they going to be in the ground or in a pot outdoors? If they're in pots, then use what you use when you grow them indoors... In fact, I would advocate using whatever nute line you're familiar with no matter whether they're in pots or in the ground as you will know how they respond to the fertilizers... Most people, I think, when planting in the ground, just let nature take its course and treat any deficiencies that may arise. The one thing I would advocate is sprinkling 1 tablespoon of Langbeinite (NPK 0-0-22) on the soil around the plant once a month whether its in a pot or in the ground... this will really increase your bud density and help stave off calcium deficiencies...
Good luck!