It's these long nights and short days which induce the coloured bracts
to appear early enough for Christmas.
The first two bracts
of each pseudowhorl arise close together in time, but the inflorescence apex appears to bifurcate unequally after each bract
has been initiated to form a large bud in the axil of the bract
This is done daily for the following six to eight weeks and then you should be able to force it to think winter has come early and it should produce those lovely bracts
in time for Christmas.
25-47 x 15-22 cm long), the primary bracts
equaling to slightly exceeding the stipes (vs.
Dogwoods are shrubs and small trees that offer almost everything a garden needs: brilliant stems in winter, generous `flowering' displays of bracts
in spring and summer, beautiful foliage often with autumn tints, attractive bark and even, in one case, edible fruits.
The compact variety Raspberry Ice has green and yellow foliage and red papery bracts
that cover the tiny white flowers.
In this type of inflorescence, the first bract
may be culmlike (e.
My favourite is Tillandsia cyanea with dark green leaves , a deep pink bract
and a deep purple flower.
Commercially the plants are forced into producing the coloured bracts
and the small flowers by the control of the plant's day and night length - any nights longer than 12 hours will instigate the production of flowers - this occurs in Huddersfield from around September 26 onwards, as our days shorten and the nights lengthen towards autumn and winter.
Traditionally it is red bracts
that are associated with the poinsettia and gives it a rightful place as a favourite in our homes for Christmas.
The showy, heartshaped portion of the flower is actually a bract
or modified leaf called a spathe.
It is those little center buds that are the true flowers of the poinsettia, while the eye-catching red growth is a leaf cluster known as the bract
The branches, with our plant three at number, are almost at right angles where they branch off, bending soon upward, shorter than the top spike, always simple and with a primary bract
similar to the scape bracts
but somewhat wider, and solidly appressed to the branch.
arising from the axillary bud of the single involucral bract
The multicategorical characteristics were as follows: (1) the primary head shape: circular, elliptical, oval, triangular and large transverse elliptical (Figure 1); (2) the head tip shape: acute, rounded, flat, and depressed; (3) the outer bract
tip shape: acute, flat, and emarginated; (4) the external color of the bract
: green, violet-striped green, green-striped violet, mainly violet and totally violet; and (5) the anthocyanic pigmentation of the petiole: absent, weak, moderate, strong, and very strong.