There is a really simple planning tool on the Better Homes an Gardens magazine website. May be too generic for what you need, but its simple and free, so a good place to start. Good Luck!

Don't forget to include some fabulous pink daylilies!

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I have a pink phlox that is still, after 27F last night, showing a little color. And there are any number of other pink flowers, from pale pastel to screaming hot pink. And don't forget the flowering bulbs, from hyacinths and crocus to lycoris.

I have seen a book, which lists the colors of flowers and their characteristics, height, bloom time, etc.. I can't now remember its name, nor lay hands on it if it's one I own, but will keep cudgeling my failing memory.

Regarding your planning, if you take fairly detailed, panoramic photos of the area you want to plant, trace over them (taped together) with tracing paper, then make copies of the traced outline, you can then use colored pencils or paints to give yourself a rough idea of the shapes of the plants and their placements and flowering times. If you don't like one plan, then take another copy and start again.... And most tracing paper is thin enough that you can overlay it on the photos, and have a rough idea of what it would look like at one moment in time.

To make your 'pink' landscaping stand out even more, be sure to add a little bit of a third color. That's the secret to making your main color pop! You mentioned using white, and that's a great way to blend and tie in your various pinks. But think about adding some blue or bright yellow as an occasional accent.

Pink saponaria blooms on and on, and my deer don't like it. Pink poppies with gorgeous black blotched centers. Cleome. Some of the pink and yellow blended lantana. What about some dark foliage for the contrast Rhizo suggested? Burgandy coleus or perilla magilla or purple leaf plum or blood grass or some violet-stemmed black current datura? I love pink too, but I have lots of reds in some areas, then yellow mixed with deep purples in others - guess I need to think a pink bed for spring too.

Wow! What great suggestions! I've checked out the BH&G plan design planner and have created a rough layout of my yard already. What's cool about that site is it is to scale. So, I'm going to get busy with my measuring tools.

And I love the other suggestions, too. The daylillies are beautiful and I like the idea of some blue contrast. I have a brick home and am wanting to stay away from orange, red or other complementary colors. I don't think the orange/red flowers would "show" as well. But, I'm going to take some panoramic photos this weekend and try my hand at tracing and some "coloring". That could lead to a new hobby for me!

Thanks!