Answer: The only real difference between a mock orange and a dwarf mock orange is the ultimate size at maturity. Mock orange (Philadelphus coronarius) grows about 12' high and 12' wide. A dwarf cultivar will remain compact, usually growing only 4'-5' high and wide.
Provide full sunshine and average, well-draining garden soil for your mock orange plants. Dig a hole larger than the root mass, then backfill with native soil, creating a cone at the bottom of the hole. Unpot the plant and spread the roots so they fall naturally over the little mound of soil in the bottom of the hole. Check to make sure the plant will be at the same growing level as it was in the pot. You may need to add or remove soil to accomplish this. Once you have the roots draped over the soil in the bottom of the hole, fill in the rest of the hole, lightly tamping the soil to exclude air pockets around the roots. Smooth the soil over the roots, then build a watering basin around the base of the plant. Flood the basin with water to help settle the soil and plan to water your newly installed plants once each week throughout the growing season to help them become established.
Mock orange produces wonderfully fragrant blooms in early spring. Enjoy!
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