Anyway to move indoor clones raised on 18/6 outdoors and veg with 12hours(+/-)?

I have a plant I'd like to grow outside for the summer but it's been an indoor plant vegging with 18/6. Is there a hormon or something I can use other than keeping a small light on it for a few hours before or after sun to make it change to an outdoor growing period?

Honestly you need to look up your local meritime. See exzactly when the sun rises and sets. no matter what you should alwasy introduce a plant very slowly into the outdoor world. Leave it on a back porch or under a very shaded tree for half the day then bring it in. Do this for the first week, each day letting the plant stay outside a little longer. Your plant will be shocked for a week or so NO MATTER WHAT!! Look at what your doing here. Your taking lil mis prissy never had to get dirty, lift a finger, or see a pest. And now your throwing her into the wilderness to start on her own. She'll need sometime to thicken her skin, if you know what im saying. Out door grows usually last between 6-9 months depending on the strain. If the light cycle is different from outside to inside dont worry. the plant will take all the shock from nature at once and adapt. Like i said it'll encounter the wilderness, pests, and high winds and rain, all with serious jett lagg. So take her outside progressivley and remember she'll need a bit to adjust. Two weeks and she'll be running like a deere!! I hope this helps!

peace,
StickeeGreens

Threw two clones that just started growing roots outdoors and it seems they are staying in veg instead of trying to flower. Maybe this can be done but only with fresh clones?

They should not enter the flowering stage at this time of the year, depending on where in the world you are I guess. It's right in the middle of summer here and the days are very long right now. Just do as Stickee said and they should take the shock of moving outside and keep vegging just fine.

Just leave them indoors and slowly step them down on light until they match your day period, and throw em outside.