Squash bugs are more mobile than you might think. One year I grew a garden in a wooded part of Oklahoma. The ground had never been farmed or gardened and the nearest neighbor was well over a mile away. As soon as I planted squash there they were. I have no idea where they could have come from. I never saw them on any wild plant around there.

My most successful summer squash has been Early Prolific Yellow Straightneck, a bush variety. It's a little prone to powdery mildew but still pumps out a good 8 weeks of constant squash production. -- Squash LOVE LOVE LOVE compost. The best squash I've ever grown was seeded straight into a compost pile. Second best was in a spot formerly occupied by an old apple tree and had 40+ years of decomposed apples as the soil. -- They're not too fond of transplanting. Try to get them in the ground only a couple of weeks after germination, or direct seed in the ground. -- Don't plant too early, cold will stunt their growth and allow the slugs to really massacre the leaves. In southern Oregon around May 15 is probably OK, but you might want to ask local gardeners and pay attention to the weather.If night temps are still dipping into the 40s, it's too cold for squash without protection. -- Water at the base of the plant to slow the arrival/spread of powdery mildew. Don't freak out if all your plants get it by September, however; powdery mildew is just the normal final life stage of squash in the PNW. It saps the strength of the plant, slowing production, but doesn't affect the quality of fruit.

Kay thanks for the advice! I really appreciate it being so new to the garden thing is kinda hard. Especially since I have no idea what these plants will look like when they grow up! Gumby your words are appreciated as well. I am somewhat of a prefectionist so I plan alot and do alot of researching. This gardening thing is going to teach me how to go with the flow I think. My husband already brought the wood home to build my new 4X4 box. I am going to move the zucchini out and leave only one in the bed. Ok here is where the learning happens because I have no idea how to succession plant. That is what it is called I hope. When would I start the back up squash plants? Do you think I would be ok to leave one zucchini and one yellow squash plant move the celery and leave the tomato to vine in this 2.5 X 2.5 foot area in the bed? Here is a photo to help you see where I am talking about. There are 2 pepper plants on the left I was thinking if the zucchini plant and squash plant get out of control and start to crowd the peppers I could maybe make some sort of divider. What do you guys think? If anyone has any other ideas or suggestions please I am open let me know. Here is a link that might be useful: my square foot garden blog

Normally I don't much care for squash, but that's pretty cool! ;-)