Inappropriate planting times

I thought I could use this app as a planner to remind me when it was time for certain garden tasks. I put my zip code in so it knows what zone Im in, but the app gives completely inappropriate planting times for my area. For example it suggested that I plant cucumbers in March. The last frost date in my area isnt until April 15th! And now in Feb it thinks I should be direct sowing my spring vegetables while the ground is still frozen.

Eebee1835 about Garden Time Planner