hardening off

hardening off

I was wondering what everyone's method is to harden off their seedlings before transfering them outside? I'm in zone 6, with my last frost date projected to be around May 4-8. I have broccoli, lettuce, tomatoes, peppers and eggplant growing indoors. I was wondering: 1. Could I begin the hardening off process now? 2. How long I should leave them outdoors each day? Any other info or tips would be greatly appreciated! Thanks!
New Dining Area

New Dining Area

Attracting Butterflies

Attracting Butterflies

I love damask.

I love damask.

Eggplant Harvest

Eggplant Harvest

Some kind of lily?

Some kind of lily?

Hello there domestic Divas.

Hello there domestic Divas.