Hardening off grafted toms
 

Hi, I need some advice. I've bought 2 lots of tomatoes this year and planted them straight outside over the last month or so, both lots aren't growing. I think now because I didn't harden them off. Am just starting learning about all this stuff..
They were only about 8inches tall and think got scorched and wilted. so I got rid of them and bought today 2 grafted tomato plants these are about 14 inches tall, with a couple of flowers on. they look much healthier. I haven't planted them out yet, I was wondering as they are much bigger will they need hardening off or will they be ok to plant out directly? I don't have a greenhouse. Thanks