Japanese maples are subject to very few pests. Lighter pruning can be accomplished any time in June after the first major flush of growth begins. Major structural trimming may be done before the new leaves unfurl in spring. Once established, Japanese maples may be lightly fertilized only in the early spring (April) with 4-12-8 fertilizer or 15-30-15 water soluble mixture. Only moderate amounts of fertilizer such as a transplanter with a formula in ratio of 5-15-5 should be used at planting time.įertilizing and trimming of established plants: Water heavily at time of planting and mulch the entire area with a two-inch layer of bark or leaves to ensure water retention and keep the roots cool. Mix one part peat moss to three parts of soil in the planting hole, which should be much larger than the root ball. Lacy-leaved Japanese maple cultivars add a fine texture to the landscape. The amount of light will affect the leaf colour red leaf types will be more colourful in higher light conditions.
#Japanese red maple planting instructions full#
They grow in full sun to almost full shade and will do best with protection from mid-day sun. Japanese maples grow well in any well-drained soil. If it must be exposed to wind, ensure the tree is well wrapped with burlap in the winter months.
The most important is to select a sheltered planting site that is out of the severest northwest winter winds. Japanese maples grow well in our climate if a few basic principles are followed. Other: these include variegated leaf types and linear lobum or line-leaf types. Dissected leaf types: the leaves are fine and deeply dissected or serrated. Deeply divided types: the leaves are divided down to the petiole. These include: palmate types: large leaves that look like your hand. Japanese maples are usually categorized according to leaf type. Foliage colour changes with the season, and many are especially spectacular in the autumn. Japanese maples are especially prized for the diversity of size, shape and colour of foliage. Today, there are over 1,000 varieties of different sizes, shapes and hardiness levels. During the Edo era in Japan, over 250 named cultivars were selected and grown.
The diverse beauty of Japanese maples has captivated gardeners for centuries. Acer japonicum 'Acontifolium' (courtesy Horticopia)
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