The last picture looks like a weed to me. It looks a little like a lily, but isn't. IT does however look very much like a weed that grows around here.

As for your garden, I question planting daisies in front as they can get quite tall. You did a good job on the brick so you should want to show it off. The other plants, petunias, will need to be replaced every year, which costs money.

What I would do is a border of daylilies, you'd have to buy them, but they're fairly inexpensive, they're very hardy, perennial, and they'll grow and multiply for years, eventually allowing you to dig/divide and sell or expand with the extras. They're also short enough not to block anything from your house (some of the option options you mentioned would be taller).

http://www.gardeningforums.net/galle...to=142&cat=506

Above is a picture of my back garden from years ago, notice the row of short yellow flowers in front. Those are daylilies, I planted 1 per foot. 2005

http://www.gardeningforums.net/galle...to=123&cat=506

Here is 2006, 1 year later, look at how well they have filled in already.


http://www.gardeningforums.net/galle...to=114&cat=506

Here is 2007. Very very full.

You should see them now, lush and green (though, not blooming yet this year).

This daylily is happy returns, fairly inexpensive, not as cheap as stella de oro though, which is the cheapest. Stella gets a little taller and has more orangish-yellow blooms.

On ebay right now you an get 25 happy returns for $35, or 50 for $65. You'll want 1 per foot, or to make it lusher sooner, 1 for 8 inches, 10 inches, pick it. You can plant them as close as 6 inches.

You can buy 100 Stella De Oro's on ebay for $40, very cheap. 40 cents per plant.
http://cgi.ebay.com/100-INDIVIDUAL-F...item35a833fbc7

If you've never grown daylilies before they'll often come to you in a bareroot clump, you will need to tease apart the clump to remove each individual fan (what plants are called) you will be able to tell a fan because it is the spot where a fan of foliage comes up. Sometimes fans are doubled (two stuck together) that is fine, you can plant them like that.

They're carefree, they bloom most of the summer, eventually you can see extras to make back your cost, all told an excellent plant for a border.

The only downside, especially with Stella, is that it is the most commonly planted perennial flower in the United States, so you win no points for originality. But it is popular for a reason.

With the yellow flowers consider planting red flowers or especially plants with red foliage in the lower tier, the contrast will look nice. You could do coral bells (heuchera) or if you wanted more annual flowers like your petunias, go with a red leaved begonia.