The answer to 'how to install shrub' is to properly prepare the planting site, select the right shrub for your location, and plant and care for the shrub correctly. First, choose a spot that gets the right amount of sunlight for the shrub variety and has well-draining soil. Dig a hole 2-3 times wider than the root ball but no deeper. Loosen the soil in the hole and amend it with compost if needed. Gently remove the shrub from its container, being careful not to damage the roots. Place the shrub in the hole and backfill with soil, tamping it down to remove air pockets. Water thoroughly after planting and continue watering regularly for the first year as the shrub establishes.
Proper planting and care are key to helping your new shrub thrive. If you're unsure about the best shrub for your yard or need help with the installation, it's a good idea to consult a professional landscaper.