How do you plant variegated dogwood shrub?

If barerooted when leaves are off. If from a container anytime.

yes. shrubs are small bushes, which are plants.

like any other bush. 36" apart. slow grower, so full sun if you want it to grow bigger than when you get it.

Yes provided you feed and water them as required.

Tea. Cacti. Jasmine. Periwinkle