Please add your pictures directly to the thread. For some of us who post regularly, it's a time consuming chore to chase after them. One picture per post can be added.

Doug: I agree with everything Ingrid said, and have some additional comments. I love hedges, and design a lot of them, but have done only a few with roses. When I create a rose hedge, I prefer to keep it simple, using only one type/color of rose. If I want two colors, I'll create a second shorter hedge in front of the first. Or I might intersect a yellow hedge, for example, with a white one to create an abstract, contemporary look. I do think the picture Kate linked of the red and pink rose hedge is pretty, but I don't have the courage to create a hedge from two different types of roses. Too complicated. Too many things that might look wrong. Not just height, but form, foliage, color. And who knows what else. When I create a hedge I want it to read as one unified object, so Ingrid nailed it when she used the word "confusing" in reference to your selection of two different roses. Regarding the color scheme, color can really set the mood for a space. So how do you want the garden to make you feel? A saturated red and a saturated yellow (as these two roses seem to be) is going to give you a high-voltage color scheme. If done well, it should be exuberant and exciting. If done poorly, it might read as just plain loud. Adding a lot of white and white with yellow can help even it out. Adding a plant that's white, yellow, and red can knit the whole scheme together, especially if you scatter it here and there throughout the garden. Just be aware that a red and yellow garden can be a happy space, but is not likely to be tranquil and mesmerizing. And a red/yellow pairing is not the easiest color scheme for those without experience or innate artistic flair to pull off.

Jackie -- Plant Iceberg. If it's not pruned a lot, and the plants are placed closely, it can be a magnificent continuous-blooming hedge for Southern California. It should be disease-free, mildly-fragrant, and widely available. I don't know where you are in CA, but if you are in SoCal, Otto & Sons in Fillmore sells to the Landscape trade. I suspect they will have well-grown Icebergs. Some will recommend Simplicity -- but you will do better with Iceberg. Just plant close, and don't prune hard. Jeri

I'm making the assumption that the physical barrier and time is more important to you than a stylish, trendy choice. I'm also assuming you want super-dense growth, not airy, see-through growth. If it was me in that not very appealing situation of homeless people pooping on the lawn, I would go with boring, plain, common, utterly reliable old Privet, Ligustrum Japonicum, available in 1 gallons at any Home Depot for about $5 each. Yes they are boring, and horribly common, but they are common for a very good reason: they make a dense, tough hedge FAST. Plant them at 3' centers and you'll have a substantial physical barrier in a year. Water them generously and feed them a couple of times and tip the stems growing outwards back as they grow. Ligustrum well watered and fed will quickly grow 6'-8' stems that arch outwards and wave above the rest of the original juvenile (baby plant) growth. Temporarily stake these stems straight UP or almost straight up with bamboo stakes, creating a strong basis for vertical growth. Cut them at the height you want. They will stiffen up and branch outwards. Then cut those outward growing side branches at the width you want, but reasonably you need to give them at least 30", a little more would be better. My experience is that the one gallons grow faster and stronger than the fives (at one third the price). Make totally sure you get FRESH plants that have just come in from the suppliers, not old stock that has been sitting around. If I had kids though I would also put a chain link fence of legal height (3'? 4'?) right next to the sidewalk, and grow the Privet inside that. Extra security when toys go rolling out into the street. Chain link lasts for decades. Better choice than wood and much cheaper than wrought iron or vinyl and guys who know what they are doing can install it in one day. Again I am assuming you are concerned with security first and style not so urgently and that you do not have unlimited money to spend. Almost any plant, if it gets a reasonable amount of sun during the growing season, can take winter shade. You will get better foliage density with more sun. I'm growing the Green Tower Boxwood also. I think it's a great, great plant for a screen, but it's going to be a lot slower (add 3-4 years) than Ligustrum to get really dense, and the initial cost of the plants is going to be a lot higher. They get tall fast, but they don't get dense fast. Something like that would certainly work but you have to balance out the cost & time involved as to what you want. Ligustrum planted from 1 gallons: 11 months later, nearly 6'. At about the middle of the second photo on the right, with the fence as the background, you can see the long arching stems they throw out when young. If you train those mostly upwards it will give you a narrower plant and more height faster than letting them just arch horizontally. Best of luck with your project!