December is the month when our short-day plants bloom. It is December when the sun is closest to the earth so we get short days, and December 21 is what the earth calls the winter solstice. These plants whose flowering are affected by daylength are called photoperiodic plants. When i was in college I have a little confusion about these plants, because short-day plants are actually those that needed long nights. It is the long nights that trigger them to start flowering and not the short days. So why they are called short-day plants is still a mystery to me. Many commercial plant nurseries take advantage of this capacity to respond to daylength for flowering and treat their plants en masse. This is exemplified by the chrysanthemums, I will not include poinsettias because the mechanism for poinsettias are different.
December daylength doesn't mean the rest of our plants stop blooming during these period. However, the non-photoperiodic ones have been blooming since the start of the rainy season, so they are already mature this time, and some are already preparing for the end of the rainy season, that means start of the dry season. These plants are not anymore at the peak of their flowering beauty. So here they are parading before you, judge them as you please!
These are spray chrysanthemums we just allow growing as a hedge
Chrysanthemum is the only photoperiodic plants we have.
red roses flower continuously during the rainy season, not photoperiodic
a Justicia hybrid whose identity still eludes me
Chrysothemis pulchelia, flowers dwindle already starting to fruit
Odontonema strictum or firespike, also prolific these colder days
a dainty lily whose leaves are variegated, Dianella tasmanica 'Variegata'
marigolds and Impatiens balsamina
continuously flowering blue Duranta erecta, regardless or season and photoperiod
Alternanthera, white variegated
Sanchezia speciosa, fully vegetative during the rainy months, flower at the dry season
Coleus blumei with Marantha at the back
Hoya diversifolia first flowering but with many simultaneous umbels
Hoya crassicaulis first bloom, promising a big umbel
Hoya diversifolia, 2nd plant's first flowering