BONSAI BOY OF NEW YORK
CROWN OF THORNS (euphorbia milii)
The Crown of Thorns is a spiny, succulent bonsai that flowers nearly all year. The common name alludes to the legend that the euphorbi milii worn by Christ at the time of his crucifixion was made from stems of this plant. The botanical name comes from Euphorbus, the Greek physician of King Juba II (about 50 BC to 19 AD). King Juba II was the first person to find a succulent-type Euphorbia, and he named it after his physician. Milii comes from Baron Milius, once governor of the island of Bourbon, who introduced the species into cultivation in France in 1821.The yellow flowers are small and the brightly colored modified leaves (bracts) found just beneath the flowers are quite attractive.
How To Take Proper Care Of Your Indoor Bonsai Tree
Bonsai is the reproduction of natural tree forms in miniature. This art form has
its origin in Japan and China where it has been practiced for centuries. Bonsai
are grown in pots and are totally dependent on you for their care.
With proper care, your bonsai will remain healthy, beautiful and miniature
for many years to come. Since your bonsai is a living miniature tree, it will
increase 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.
PLACEMENT SPRING, SUMMER & FALL
The Crown of Thorns will thrive indoors in high light and appreciates being kept outdoors during the spring and summer. When night time temperatures drop below 45 degrees we suggest that you place the tree on a windowsill or on a table in front of one.
Once nightly lows begin approaching the 40 degree mark, it is time to bring your indoor bonsai inside. The ideal indoor location is on a window sill facing south. An east or west exposure is second best. A northern exposure will work, but will necessitate the use of "grow lights" to provide sufficient light to keep your bonsai healthy. Four to six hours of sunlight per day should suffice. If you can provide more, so much the better.
The watering of your bonsai must never be neglected. Apply water before the soil appears dry -- never allow the soil to become completely dry. It is a good idea to use a moisture meter until you get to know the requirements of your bonsai tree. Water should be applied until it begins running out of the holes in the bottom of your pot. It doesn’t really matter “how” you water your tree, but rather that when you are finished the tree has been well watered.
During the cold months, when your bonsai is inside, we recommend placing it
in a shallow tray filled with a layer of gravel with water added. This provides
extra moisture around the tree as the water evaporates and reduces the amount
of moisture lost to modern heating systems.
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 foliar 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 & PINCHING
Trimming and pinching keep your tree miniature. Pinch and trim back the new
growth to the farthest safe point. Never should all of the new growth be removed.
A little should be left to sustain the health of the tree. Tropical and sub-tropical
trees used for bonsai will require periodic pinching and trimming throughout
the year. 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.
Repotting must be performed periodically on all bonsai when their root system
has filled the pot. The reasons for repotting 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, while evergreens only need
to be repotted every four or five 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. Repotting 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 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 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.
INSECTS & DISEASES
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.