CRABAPPLE (Malus Sargentii) - Information & Care Instructions

Posted on 16 Apr 19:27


CRABAPPLE (Malus Sargentii)

Flowering Crabapple (Malus sargentii), sometimes called Sargent crabapple or Sargent's apple, is a species of crabapple in the genus Malus.
The plant is native to Japan.  Named Malus Sargentii after the man who introduced it from Japan in 1892, C.S. Sargent.
The in nature, the mature Sargent Crabapple grows to be 6' to 10' feet in height and has a spread of about 6' to 12'.
Today this Crabapple is widely grown. It is the smallest and most shrub like of all the crabapples. Left to itself it forms a rounded, dense crown with gnarled and sometimes thorny zigzag branches with age. The crown can spread up to twice as wide as the tree is tall.
However, this flowering crabapple can be pruned to a single trunk with a round shape habit. Its bark is a lovely dark gray-brown.
It is slow growing plant which prefers moist, acidic loam, but will tolerate drier soils; alkaline soils and acidic soils; does well in full sun.
All these characteristics, which make this an ideal landscape shrub or multi-stemmed tree in nature, make it a wonderful tree for bonsai training. 

As a Bonsai: These same fore mentioned characteristics make this Flowering Crabapple one of the best flowering trees for Bonsai.
This tree produces lovely pink buds; which open to beautiful fragrant white flowers; which covers the entire tree in early spring, before and as, the foliage appears.
Little green pomes (apples) appear in summer, derived from the enlargement of the entire flower receptacle which becomes fleshy; followed by pea sized; berry-like fruits which turn bright red in early fall and persist on the tree into winter.
The new leaves are light green with fine hairs, the turn dark green & smooth in summer; on bonsai they tend to be small and lobed, but can vary in shape.
Striking in the fall, as the tree begins to prepare for dormancy; the foliage begins to turn to shades of yellow, orange and red.
Winter brings a nice twiggy skeletal outline punctuated by the fruit which persists throughout the winter.

Malus Sargentii tend to be easy to grow; it is quite pest and disease resistant. 
In nature, the Crabapple can be expected to grow in Zones 4 – 8; see the climate charts shown in color above.
Keep in mind because your tree is a bonsai and potted, the plants roots do not have the grounds protection in winter.
This means that in colder climates; your bonsai will need burying & mulching or an unheated shelter, for winter protection.  Protection which is not necessary for the natural & landscape plants, to which the charts zone numbers refer.
I would suggest this tree needs some extra winter attention, in any climate with temperatures below zone 7. See Bonsai winter care below.

How To Take Proper Care Of Your Bonsai Tree
Bonsai is the reproduction of natural tree forms in miniature.  This art form has its origin in China
and Japan where it has been practiced for centuries.  Bonsai are plants grown in pots; they are totally dependent on you for their care.
With proper care, your bonsai will remain healthy, beautiful and miniature for many years to come; increasing in beauty as it matures through the years.
The instructions below are just the basics and, therefore, we recommend that you purchase one of the many fine books available on the subject.
As a living miniature tree and not a house plant; your bonsai crabapple must be maintained in a cool/cold environment during the winter season. (See our Guide to Warm Climates and Deciduous Trees in a separate article). 
As a general guide; around Thanksgiving Day it is time to prepare your Bonsai for its winter dormancy period, which should last approximately three (3) months.
This can be accomplished in several ways.
One method is to bury your tree in the ground (preferably without the pot) up to the rim of the container and then mulch up to the first branch. It is best to choose a location that is protected from wind and sun, but not rain or snow.
A second method which is also common is to place your tree(s) in an unheated garage or shed. During this time, your tree does not require light because it is in a dormant state; however, it will require watering approximately every two weeks. Check weekly the first few months of the first year, until you have a feel for it’s water needs as humidity conditions will vary watering needs.
Throughout the spring, summer and fall your Bonsai should be placed outside, such as on a patio, balcony, terrace, or in a garden.
Once outside, your Bonsai should be positioned where it will receive sufficient sun – morning sun and afternoon shade is best.
A Bonsai can be viewed best when it is placed approximately three to four feet high (eye level), such as on a table, wall or bench.
A Bonsai can and should be brought into the house on special occasions and displayed in a prominent place. Your Bonsai should not remain inside for more than a few days at a time, as the atmosphere is detrimental to the health of your outdoor tree.

The watering of your Bonsai must never be neglected. Apply water when the soil appears dry - never allow the soil to become completely dry. If your Bonsai is receiving full sun, it may be necessary to water once a day.

This schedule may vary with the size pot, type of soil and type/age of the Bonsai tree.
Evaluate each tree's water requirements and adjust your watering schedule to accommodate it. It is a good idea to use a moisture meter until you get to know the requirements of your Bonsai tree. Watering should be done with a watering can or hose attachment which should dispense the water in a soft enough manner as not to disturb the soil. Water should be applied until it begins running out of the holes in the bottom of your pot. A good rain is usually a sufficient watering.

Fertilizing is also necessary if your bonsai is to remain healthy and beautiful. Since your bonsai is growing in such a small amount of soil it is necessary to replenish the soil's supply of nutrients periodically. Any general-purpose liquid fertilizer will do fine and is available at most garden centers. We suggest that fertilizers be used at half their recommended strength. Fertilizer should be applied at least once a month except during winter. Your bonsai will also respond well to follicular feeding, with a water-soluble fertilizer applied every other month as a spray.

This brief explanation of basic care does not cover training. Training deals with the art of bonsai and should be thoroughly understood before undertaking -- or left to a professional. However, most of the true bonsai trees you find have already been through their training period, thus requiring only periodic trimming and pinching to remain miniature.

Trimming and pinching keep your tree miniature. Pinch and trim back the new growth to the farthest safe point. You should never remove all of the new growth A little bit of new growth should be left to sustain the health of the tree.

Since different trees grow at different rates, it is necessary to evaluate each tree’s rate of growth and adjust your trimming and pinching to accommodate it.

RE-POTTING / Root Trimming
Repotting must be performed periodically on all bonsai when their root system has filled the pot.

The reasons for re-potting are to supply your tree with fresh soil, and to encourage a more compact root system. As a rule, most deciduous trees require repotting every two or three years. Since trees grow at different rates, this schedule will not always hold true, therefore, you should examine your tree's root system each year to determine if it has become pot-bound.
In most cases, the potting process is easy and safe if performed properly and at the right time of the year. Re-potting should be done in mid-summer. The tree, along with all of its soil, should be removed from the pot.
The outer and bottom most fourth of the tree's root mass should be removed. This is done by carefully raking the soil away, then pruning back the roots. In most cases, it is not good to prune back more than one fourth of the tree's root mass. After this, the tree can be placed back in its original pot or into another.
The pot should have screen placed over the drainage holes. Then a thin layer of small gravel is placed in the bottom of the pot for drainage purposes. On top of this gravel is placed the new fresh soil.
Place a layer of well-draining soil which is sufficient enough to elevate the tree to its previous height in the pot. After placing the tree back in the pot, the area left vacant by the pruned root mass should be filled in with fresh soil. This fresh soil should be worked in around and under the root mass in such a manner as to avoid leaving any air pockets.
After repotting, your bonsai should be thoroughly watered. This can best be achieved by submerging the entire pot in a tub of water.
Moss or other ground covers can be used to cover the surface of the pot to help prevent soil erosion when watering.

Since your bonsai is a tree in miniature, it can be treated for insects and diseases the same as any other tree. If you discover any insects or diseases, visit our website where you will be able to obtain the necessary products to eliminate the problem.