True Sign of Spring

Our weather has been a bit back and forth these past couple weeks. This is quite normal for Michigan. Frost on the car one morning, wearing shorts the next day and then back to frost again. So how do I know when it is Spring? Well, the days of warmth sure help indicate a change. So does the green grass and buds on the trees. And these flowers popping open in my front yard are a biggie.

But the biggest indicator for me. Shoes. When it is time to switch from these:

To these:

Now...it is Spring :)