My garden is the same situation as yours.Zinnias do very well as do marigolds,petunias,portulaca,sweet alyssum,purple millet,dwarf sunflowers,cleome which are all easy from seed.All morning sun is still classed as full sun,so you have a lot of options.

Thank you very much for your reply!

Morning sun is the more gentle of the aspects, so you could certainly try some of the annuals and perennials that like partial shade, as well as full sun. Personally, I don't consider morning sun/afternoon shade as a full sun condition. Grow your pretty zinnias, but be mindful of the dreaded powdery mildew in shadier conditions and leaf spot. Don't over crowd your plants, or over fertilize them, and make sure that they are watered in the morning rather than in the evening.

The general talk about zinnia hybrids is that the Profusion series offers best disease resistance. I can sure vouch for that! They are a smaller plant but absolutely loaded with flowers from spring until frost.

If you plant zinnias the Bennarys Giant Zinnias are spectacular and easy. But mine get full sun!

Another one that I've had good luck with for disease resistance is Zinnia Lilliput Mix. They have a smaller flower head than the larger dahlia shaped flowers. They are a very nice cut flower!

Here is a link that might be useful: Photo of Lilliput Mix

One more thing don't start your zinnias too early inside or they will get too leggy. I usually start them 6 weeks before the last frost in my area. Be sure to pinch back to get bushy plants or you'll end up with one long flower stem. The deer in my area sometimes chew them to the ground so grow a few extra and keep in reserve. I usually start a 6 pack of each variety and plant 3 of the strongest plants and use the others as backups. If you end up having a deer problem you can sprinkle them with a little lime until they get a little bigger. The deer won't both them once they have a couple of sets of leaves. I hope I don't scare you off -- they are a truely easy plant that are wonderful for cut flowers!

Thank you all very much for the replies!
Hopefully I can come back on here this summer with a photo of my effort ( & show more then the dirt that is there now :)

Zinnia angustifolia (the "unimproved" orange small-flowered plant) will do well in half-day sun and shows good mildew resistance. It's loaded with blooms all season long.

Benary Giants are beautiful large-flowered zinnias, but in my experience really do need full sun (there's a mildew problem in lower light and especially if crowded).

Zinnias will do just fine with the morning sun. Don't start them indoors, plant them where you want them to grow. When you water,water the soil not the plant foliage. I have had very good luck with the "cut and come again zinnia" because they truely do. Plant according to package directions and you should have no problem. Good Luck

Funny...different ideas from each person. And GREAT ideas! I agree with Eric about the little angustifolia zinnias. My favorites for a couple of seasons have been the 'profusion' series, with tons and tons of all season blooms and zero disease.

I start all of my annuals and perennials from seed several weeks early, because I prefer to set out plants after all chance of frost is gone, rather than seed. Zinnias do very well planted directly, however, and if you aren't certain about how to prevent legginess. Have fun!