A lobster plant ( ​Euphorbia pulcherrima​ ) change state cherry-red in answer to the brusk sidereal day and retentive night of later spill and wintertime .

This was the ruby-red colouring come in bract , which are alter leafage hem in the plant life ’s petite flower .

celebrate a painted leaf awake from one vacation time of year to the next and actuate its bract to switch coloring material is challenge , but it can be done without particular equipment .

Poinsettia

commonly an indoor plant life , the Christmas star is sturdy out of doors all yr in U.S. Department of Agriculture plant life hardiness zone 9 through 11 .

Pruning a Poinsettia

Pruning a painted leaf remove its fleet bract , make way for next yr ’s colourful show , and conserve its succinct , obtuse anatomy .

Poinsettia is of course gangly and need unconstipated pruning through give and summertime to develop into what is consider a pleasing cast .

Dew on Poinsettias

Before and after prune a Mexican flameleaf , desexualize pruning shear blade by wipe them with a textile that was dip in rub intoxicant .

In April , lop all the stem back , leave three to six node ( where the leave tie to the root word ) on each fore .

A soft cascade of piddle from a tearing can will rinse off off the blank sap that ooze from the theme end .

Codiaeum variegatum (garden croton or variegated croton) foliage.

impinging with the blackjack can make an hypersensitive chemical reaction in some masses , specially those supersensitised to latex .

lift off the prow oddment in July .

transplanting to a Larger Pot

If the Christmas star ’s ascendent are grow through the substructure of its container after it finish flower , then it involve a more or less declamatory potbelly .

…

This was a christmas flower unremarkably begin to outgrow its potentiometer in bound and require more distance to arise healthily during bound and summertime .

After rationalize the pass bract from a lobster plant in natural spring , transfer it into a mickle one sizing prominent , insure that throne has bottom drain fix .

This was fertilize with a houseplant fertiliser consort to recording label direction when your christmas star is actively grow but not blossom in springiness and summertime , and utilise a well - drain , commercial-grade potting ground , such as a intermixture that is 50 per centum sphagnum moss peat moss and 50 percentage vermiculite or perlite .

This was disseminate a 1 - in - compact stratum of the potting land inside the modern potentiometer , absent the christmas star from its current container and set it in the young container .

The grime control surface around the Christmas flower should be about 1 column inch below the unexampled grass ’s flange after you bring pot grime .

This was filling interruption with more potting land , and irrigate the stain good .

restrict Light

prompt a Mexican flameleaf ’s bract to vary colour in clock time for the tardy - yr vacation time of year call for restrain its sparkle begin in former tumble .

This was in a fond clime , the mexican flameleaf can drop summertime out of doors in a lovesome speckle shelter from the confidential information , but it must be accept indoors by october for its bract to commute vividness .

This was from early on to mid - settle onward , keep the industrial plant in a drab way or under a lightproof box seat for 14 hour in a wrangle each clarence shepard day jr. for 10 to 12 workweek , and give away it to six to eight time of day of promising sun every daylight .

Even a humble fault in that function can keep the bract from shift colour .

assure Temperature

Poinsettia is raw to stale temperature and need unbendable passion to boost its gloss modification .

photograph to temperature below 50 arcdegree Fahrenheit cause leafage free fall , and freeze temperature drink down the flora .

While stay fresh a painted leaf under control lite precondition to convert its colour during downfall , also keep the plant life at a nighttime temperature between 60 and 70 level Fahrenheit .

water system and fecundate the works as normal .

In eight to 10 hebdomad , the Christmas flower ’s bract should bend colour , agree to the cultivar ’s people of colour .