Springing into Spring

I started a project with Kyle to help kick off the spring....problem is I started it WAY too early. It's going beautifully, we have TONS of plants growing in the office window and they are growing really quickly. They could in fact be planted in the ground right now, but the ground is about 1 1/2 months away from being ready and you never do know when that last frost will be. I've lost many flowers before there time due to a late frost. I'm transplanting a few of them into much larger pots and hoping they won't outgrow them and hang on until they can be planted. We shall see!