What flowers and trees are suitable for planting in the northern courtyard?

For example: longevity without borders, wealth and good fortune and other corresponding plants. There is no need to plant too many small courtyards or gardens. According to the design layout and plant volume, choose the appropriate plant planting 1-3 plants. The height of big trees is generally more than 3.5 meters, which mainly supports the courtyard skeleton. The height of small trees can be 2-3 meters, which plays a role in embellishing the atmosphere. Plant selection must fully understand the ecological habits of plants and comprehensively consider the main ornamental characteristics of plants such as plant height, flowering period, color and texture. Attention should be paid to perennial flowers that can overwinter in the open field, do not need special maintenance, have long flowering period and high ornamental value. Planting annual and perennial plants together and choosing plants with strong vitality and easy maintenance are all good ways to choose plants in flower border construction. For example, roots, Hosta, Hemerocallis, Iris, Endless Summer Hydrangea, Boxwood Hairball, Ranunculus, etc.