Monthly Archives: December 2008

Opps I almost missed the flowering of my Hoya caudata!

For a long time, I was not interested in growing hoyas at all. I have always regarded them as messy vines that require space to grow. In addition, many of them require good light to grow which was what my growing area in my old place at Serangoon North severely lacked. Even though most of the species on sale in our local nurseries produce fragrant and attractive flowers, I was not attracted to them because they are not frequent and continuous bloomers.

The most unlikely thing occurred just recently. My interest in hoyas was unknowingly triggered whilst I was trying find out more about them during my preparation to write a Garden Treats article for the local Home Concepts Magazine. At about the same time, I was about to move to my new home at Hougang that has a balcony which is blessed with relatively good light for half a year and I thought I should just go buy a couple of hoyas since I now have conducive environmental conditions to grow them. 

The Hoya caudata plant that I have.

One species of the hoyas that I first started my hoya love was Hoya caudata which is native to Malaysia and Thailand. This particular species caught my attention via its beautiful elliptical leaves that are mottled with random silvery white patches. The leaves have slightly wavy margins that feature undersides that are solid red in colour. As mentioned earlier, hoya plants are not known to be frequent and continuous bloomers and I thought H. caudata is one plant that will remain ornamental even when it is not in flower.

Beautiful leaves of Hoya caudata.

Because my balcony is north-facing, the growing area where the H. caudata is now located does not receive direct sunshine at all. As a result, the stiff leaves take on a ‘greener’ look although the silvery white patches are still visible. When the sun returns to trace its northerly path from March to August next year, I would expect the leaves to have more red colour on them.

Hoyas can be rather boring plants to grow. Their growth rate is quite slow compared to many other vines we normally come across. But their sluggish growth rate can be viewed as a good thing too as they do not require frequent maintanence from their owner. Hence they make ideal houseplants for today’s busy executives!

The first umbel of flowers that was produced by my Hoya caudata. 

After I bought my H. caudata plant, I hung it in my balcony and thought much nothing about it. It was only in the recent few days while I was moving my plants around, I then realise my H. caudata has actually produced an umbel of flowers for me. Unlike some of the hoyas that I have seen, the flowers of H. caudata are rather small and each measures about 1 cm in diameter. The umbel that was produced had 7 flowers hanging from a rather flattish umbel.

Not only they are small, the flowers of H. caudata can be easily overlooked as they do not emit an overpowering fragrance to make one take notice of them. Each flower has a characteristic star shape, are pink in colour with a rather red center and features numerous fine white hairs all around its edge. They were not particularly long-lasting and they fade away about 3 to 4 days after they bloom.

A Double Beauty – Getting to know the Self-Peeling Banana

Just yesterday, I received yet another email message from Keneric Ng, a Plant Information Officer from the National Parks Board (NParks) of Singapore that shares with me an interesting sight he saw at HortPark. He witnessed the relatively well-known but intriguing habit of an ornamental banana, Musa velutina, where the skin of its ripe fruits has the ability to peel on its own to reveal the white flesh beneath.  

The specimen of M. velutina that is planted in the Floral Walk leading to HortPark.

Musa velutina is commonly known as the Velvet-Pink Banana or Self-peeling Banana. The common names, Keneric shared in his email, are so valid and explain it all. In fact, the Latin specific name ‘velutina’ has the meaning of ”velvety”. It is so named because the whole infructescence is covered with short trichomes (hairs), and naturally the fruits (i.e. banana’s skin) possessed the same velvety texture too.

Both are ornamental in their own right – M. velutina‘s inflorescence (left) and a bunch of purple, velvety fruits (right).

Musa velutina has two facets of beauty. First , it bears beautiful flowers that feature bright pink coloured bracts. They are held upright and contrast starkly against its jade green foliage. Second, unlike the many plain and green coloured fruits borne by many common ornamental bananas such as Musa laterita, M. coccinea (M. uranoscopus) and M. ornata, the fruits of M. velutina are pinkish purple in colour. A bunch of fruits can certainly can rival with its own flowers in terms of beauty and for attention from its grower.

The pink coloured inflorescence of M. velutina is extremely attractive.

When ripe, the fruits of  M. velutina curiously splits open to reveal the glaring white flesh inside. Musa velutina is a species banana and therefore has seeds, unlike the seedless hybrids that we encounter as cooking plantains and dessert fruits. The seeds of M. velutina are typical of a Musa as they are numerous, hard and black. 

The fruits of M. velutina that split – don’t they look like stars?

It is interesting to note that this is the only common ornamental banana that is seen locally that splits open its fruits when they are ripe. Musa laterita, M. coccinea (M. uranoscopus) and M. ornata are not noted to do this! Perhaps it is a way that this species of banana use to attract and invite animals such as birds to eat its fruits and help to disperse its seeds. The fruits that have split open are quite attractive on their own. The pointed flaps of the skin of an unpeeled fruit reflex backwards and that make each one of them look like a star!

The fruit of the Musa velutina – it is obviously very seedy!

The fruit of M. velutina is not exactly edible. Keneric did a taste test and shared that it is not because it is poisonous, but there are so many seeds in each fruit that makes each one of them really difficult to consume. The seeds are actually visible even without bruising the flesh of each fruit. Keneric described that eating a fruit of M. velutina is akin to eating a custard apple – he had to suck whatever pulp he can from the seeds. It is not exactly tasty but nevertheless, he picked up some mild banana-sweetness in it still.

 

A closer look at the numerous black seeds extracted from a ripe fruit of M. velutina

As Keneric was going around to document on the M. velutina at the Floral Walk of HortPark, many curious visitors, including a child with his mother, walked by and were fascinated by what they saw and they asked many questions such as ”Is that a banana? Why is it white? Does banana spilt? Are those seeds? (when they saw Keneric dissected the fruits on site).”

Keneric later passed some seeds to that inquisitive boy and told him to show his teacher the discovery he has made during his holidays. Being able to witness the pretty spilt fruits of  M. velutina already made his day and this little interaction with the boy kind of made it twice. As we can see, plants and gardens in Singapore have an important educational role to play, on top of beautifying the surroundings.

Home Concepts Magazine (Dec 08)

The December 08 issue of the Home Concepts magazine is out on sale on most newstands and good bookstores! Do grab a copy if you want to get some home decor inspirations to celebrate Christmas with style!

I have contributed an article entitled “Alternative Christmas Plants” in the Garden Treats column in this month’s issue. Many of the plants we buy during Christmas are best treated as display plants which should be discarded after the festive period is over because they are not suitable for growing under our tropical climate. For those of you who want to look for evergreen tropical plants with a Christmas feel, do take a look at the article I wrote, where I also shared the growing tips of two plants.

In the article, I introduced two tropical plants which people can get for display during this time of the year. The first plant is the Chinese Croton (Excoecaria cochinchinensis) which is a pervasive shrub that is so common that most people would have taken it for granted. The second plant is the Sea Holly (Acanthus ebracteatus), which is, on the other hand, rather obscure to most people.

The Chinese Croton, better known by its botanical name by people working in the nursery trade, is a popular landscape plant candidate. The variegated version is a more attractive variety that features white splashes against a green background on the upperside of its leaves. This constitutes the two out of three colours associated with Christmas. The underside of the leaves of the Chinese Croton is deep red and that makes up the third colour. Hence, in one plant you have all three Christmas colours – red, green and white!

Whenever there is a light breeze, I enjoy watching the leaves of this attractive plant as they dance along in the wind. The Chinese Croton is a plant that is commonly used as a border shrub and I have seen it being grown in pots and sold in quite a few nurseries. It is a shrub that can be pruned back to keep its size in check.

I thought it would be nice to be able to circle a small Norfolk Island pine (Araucaria heterophylla) at the base with short Chinese Croton plants to celebrate Christmas the tropical way…

The second plant that was mentioned in the article is the Sea Holly and like the Chinese Croton, the variegated version, in my opinion, is somewhat more attractive. As its common name suggests, the Sea Holly has leaves that resemble those of the Christmas Holly. It is best to position this plant in a location where human traffic is low because the leaves has sharp spines that can hurt the skin.

For those who are unaware, the Sea Holly is a marginal plant that grows in wet areas such as mangroves and it can tolerate brackish waters! The Singapore Botanic Gardens has some plants growing on the edge of several artificial streams in the Tanglin Core.

Besides being ornamental, these two plants have medicinal properties. However, it is best to not self-medicate using these plants for the treatment of any ailment. Please consult a trained herbalist!

Root Awakening (6 Dec 08)

The first instalment of the Root Awakening column for the month of December this year was published on Straits Times Life! last Saturday, on 6 Dec 2008. Intriguingly, last weekend’s column was the first that did not feature a picture of a plant. As a result, I almost failed in my attempt to find it.

 Three gardening questions were answered this time around. Two questions revolved around ornamental plants that have been popular with Singaporeans and they include the desert rose and jasmine. The jasmine plant can be a difficult plant to grow. What the reader has described in his/her question seemed rather vague to me and I could only offer some insights from what I tried to perceive to be occurring. For a better understanding of the problem, most of us would need to know its growing conditions too.

In general, the desert rose is a plant that requires good light to grow. People here grow them under full direct sunshine but with protection from our tropical rains which may prove to be too wet for this succulent plant. In the highrise apartment, one should provide the desert rose with at least 4 hours of direct sunshine daily in order for the plant to flower. Otherwise, not only will the plant fail to bloom, the shoots will also etiolate and result in a lanky and visually unappealling plant.

The third question was about the growing of passionfruit. Like most other edible plants and fruit trees, the passionfruit vine similarly needs to be grown in a location with direct sunshine in order for the plant to grow healthily and produce fruit. The plant can be grown in containers and still bear some fruits as seen in some plants that are available for sale in our local nurseries. Water must be given regularly to plants grown in containers so as to avoid water stress during hot weather which can adversely affect plant health and fruit production. 

Many thanks to Straits Times Life! for helping to publicise Cindy’s talk on bog carnivorous plants that was held at HortPark on the same day.

Another Two More Backdated GCS Feature Articles for October 2008…

Despite my busy schedule, I managed to put up two feature articles on the Green Culture Singapore (GCS) website for members of the discussion forum to read.

Many thanks to Richmond Tan, one of the moderators from the forum, who has contributed an article that depicted how he constructed a plant rack using readily available materials, some of which were salvaged from renovation waste! His plant rack is rather innovative and allows commercially available metal plant racks to hang comfortably against the parapet wall.

The second feature article that focussed on the growing of the sand ginger was written by myself. From my own growing experience, this ginger is perhaps the only smaller-growing edible ginger that is rewarding to grow in the high-rise apartment. I found this plant is able can grow quite well and does not dry up as easily as other space-saving edible gingers such as the common cooking ginger and Chinese key (Boesenbergia rotunda).

 Make Your Own Plant Rack!

Are you an apartment gardener at a loss as to how to elevate your plants so that they receive sufficient light for growth along your corridor? Read this feature article written by Richmond Tan to get some ideas to build your own plant rack using cheap and readily available materials!

URL – http://www.greenculturesg.com/articles/oct08/oct08_plantrack.pdf

Grow the Sand Ginger!

Botanically known as Kaempferia galanga, the sand ginger is a true ginger that belongs to the same plant family as the cooking ginger. Unlike the common cooking ginger (Zingiber officinale), the rhizomes of sand ginger is not something that most people would be familiar with. Both rhizomes and whole plants can sometimes be seen on sale in selected wet markets in Singapore, such as those in Little India and Geylang Serai. Read this feature article written by Wilson to learn more about this interesting ginger and how you can grow it at home!

URL – http://www.greenculturesg.com/articles/oct08/oct08_sandginger.pdf

Cindy’s Talk @ HortPark

The year 2008 is coming to an end. For this last month of the year, we first conducted Cindy’s talk on the growing of carnivorous plants to the public at HortPark. Despite the downpour in the afternoon, we still had a good number for the audience and in it, we have several young ones. Carnivorous plants never fail to amuse children as they are fascinated by the carnivory habit of these plants.

In today’s talk, Cindy introduced to her audience the various genera of plants that inhabit wetter growing environment and they include the famous Venus flytrap (Dionaea muscipula), North American pitcher plant (Sarracenia spp.), butterworts (Pinguicula spp.) and sundrews (Drosera spp.) that are commonly grown by hobbyists in Singapore.

A young member from the audience watching how Cindy propagates a sundew plant.

Because many of these plants originate from subtropical and temperate regions of the globe, many tend to have a habit to go into dormancy. Cindy shared with the audience what conditions could trigger a plant to go to sleep as well as how to care for such a plant.

Cindy is also especially good with kids and despite the fact that a gardening talk can be rather technical in nature, she was able to attract their short attention span. When she wielded her ‘surgical tools’ that she uses to cut a plant for propagation, the kids stormed to the front to catch a glimpse of how one perform the ‘operation’.

It was exceptionally amusing to watch how one of the young ones from the audience cringed when he was asked to hold a severed trap from a Venus fly trap!  Cindy then assured him that the trap is harmless and it would not open its jaws and bite. The young ones had a good time today as Cindy was generously handing cuttings of a sundew and the Venus flytrap which they can then bring home to grow.

My heartfelt thanks go to Delwin, one of our members from the Green Culture Singapore discussion forum, who brought along some plants to make them available to members of the public for them to bring home so as to get started on the carnivorous plant growing hobby. Cindy is grateful to Sylvester Lau, the manager from the Event Sales section of HortPark, who was on duty for the day where he had helped her to set up the Fruit Room where her talk was held.

Cindy and Delwin shared with the audience how one can grow bog carnivorous plants without fear of mosquito breeding.

Last but not least, a very useful tip which Cindy and Delwin shared during the talk was how to safely provide a reservior of water that is necessary for the growing of this group of moisture-loving carnivorous plants. She introduced to the audience a very cheap and potentially environmentally-friendly method which involves putting the pot of plant inside a plastic disposable food container with a hole cut into its lid that is able to fit the base of the pot nicely. Using this method, the volume of water is made inaccessible to mosquitoes which can then not be able to lay eggs in it. This method can help to avoid mosquito breeding which is a big public health issue in Singapore.

A Fragrant Shrub to Grow in Your Garden

The perfume flower tree, a little known relative of the familiar Tembusu tree (Fagraea fragrans) flowered in HortPark recently. I was notified via a short account that was written by Mr Kelvin Heng, a manager from the Horticulture Management section of HortPark that was sent to me via email. Many thanks to the National Parks Board (NParks) for sharing this piece of information with me, as well as, the readers of my blog.

Specimens of the perfume flower tree in bloom in HortPark.

As its common name suggests, the perfume flower tree, similar to the Tembusu, produces flowers that emit an extremely pleasant fragrance. The attractive, five-petalled, trumpet-shaped flowers are borne on a bunch terminally on each growth point. They are white when they first open which turn yellow on the following day before fading away subsequently. Each flower features rather prominent stamens, measures about 5 cm in diameter and has a long throat that can be as long as 10 cm long! After the flowers fade, very pretty fruits that are jade green in colour are produced.

The beautiful and fragrant flowers of the perfume flower tree.

The plant that was flowering in HortPark is planted near lamp-post number 1-3/4/3 along the Floral Walk. Botanically known as Fagraea ceilanica, the perfume flower tree is classified under the Loganiaceae family. This evergreen plant can be pruned back to maintain it as a manageable small shrub but if it is left alone, it can grow into a small tree with a height of about 20 m.  When not in flower, the perfume flower tree still makes a very attractive shrub because it has very attractive foliage. Each leaf is rather thick to feel, oval in shape, relatively smooth to touch and shiny in appearance. 

The attractive, globe-shaped fruit of the perfume flower tree.

The perfume flower tree is said to be a plant that can be grown in large containers. It has average water needs and hence its roots should be kept moist and not allowed to dry out. Like most other flowering shrubs, to ensure that a perfume flower tree plant grows healthily and blooms, each specimen should be grown in an area with at least filtered sunshine (semi-shade), althought it can tolerate full, direct sunshine outdoors. In a high-rise apartment, one can try growing it in a location with direct sunshine for at least 4 hours daily.

‘Yin Yang’ Flower spotted on a Firecracker Plant!

The firecracker plant is a highly branched shrub that is commonly grown in planter boxes where the plant is allowed to cascade over. It produces numerous wiry stems with no obvious structures that look like leaves. As the branches emerge, they first stand up erect and as they grow longer they cascade downwards due to their weight. The fine foliage that spills over the edge of the planter box has an added advantage - it helps to ‘soften’ the harsh and sterile look of the hardscape.

The ‘Yin Yang’ Flower produced by a firecracker plant grown in HortPark.

This attractive, ornamental plant is botanically known as Russelia equisetiformis and is a member of the Scrophulariaceae family. It produces numerous small, tube-like flowers that look like firecrackers from afar. They are usually red in colour although there is another variety that produces white flowers.

Recently, Mr Keneric Ng, a Plant Information Officer from the Plant Information Unit of the National Parks Board (NParks) reported a case where a firecracker plant was found to produce an interesting-looking, bicoloured flower that was coloured two-fifths in red and the remaining three-fifths in cream.

See how cleanly the two colours were split in a single flower!

I was quite amazed and impressed with this report as Keneric must have really sharp and observant eyes to be able to spot such a minute phenomenon! I would have missed this single unique flower among the numerous flowers that a firecracker plant produce at any one time. Such a flower can be difficult to see as it could potentially be buried inside the heap of fine foliage of the firecracker plant!

The cultivar of the firecracker plant grown in HortPark that produced this one of a kind type of flower is known as ‘Flava’ which is characterised by its slightly yellow-looking foliage. The plant usually produces red coloured flowers and the ‘Yin Yang’ flower that it produced recently could have been an isolated and once-off case as mentioned by Keneric in his report.

Article on Straits Times Life! on Houseplant Tips

On the same day that my interview was published on Straits Times Life! last Saturday, there was another article that was published that focussed much on the use of so-called indoor plants for interior decor, which contained bits of my input. People who love the company of plants would want to have them inside their homes. Plants help to brighten and liven up a living space. There are reports that mentioned plants can help to cleanse the indoor atmosphere.

Cover Page of the Feature Article on Straits Times Life!

Larger version – http://smg.photobucket.com/albums/v139/kuehlapis/?action=view&current=houseplant29nov081.jpg

I believe a large number of members of the public in Singapore who are novices have a misconception of about what are called indoor plants. Because the common name used to describe them is called ‘indoor plant’, individuals may have regarded these plants are those that are able to thrive indoors, away from the balcony or corridor.

This belief is tragically wrong as indoor plants being green plants that contain chlorophyll, need sunshine to grow. Many plants sold as indoor plants are those that have been found to be more forgiving towards low-light growing conditions. It is important to note that the light intensity inside most homes (not at the balcony or corridor) is too dim and it is insufficient for the growing of these indoor plants on the long term.

In fact, the lighting conditions inside the home are classified as ‘shade’ and if plants are required to be put there for decor, they can only be put there on a temporary basis. After being displayed for a week or two, these plants should be moved to a brighter area to recuperate and rejuvenate. New plants can be moved into the area to take the place of those taken away.

First Page of the Feature Article on Straits Times Life!

Larger version – http://smg.photobucket.com/albums/v139/kuehlapis/?action=view&current=houseplant29nov082.jpg

This plant rotation practice is carried out by commercial nursery contractors in public areas like hotels and various commercial buildings that have engaged their services. Because the changing of plants is often not done during hours with high human traffic, people may not be aware of it being practised. It is important to realise that these plants that are on display look good all the time because they have been changed regularly and not because they love and thrive under the low light conditions there.

Second Page of the Feature Article on Straits Times Life! that contains a plant list.

Larger version – http://smg.photobucket.com/albums/v139/kuehlapis/?action=view&current=houseplant29nov083.jpg

(Note – The first eight plants were contributed by myself).

Last but not least, as mentioned in the article, it is alright to have plants in the bedroom. There is this fear that plants will compete with us for oxygen during the night but the amount plants take in is generally been regarded as negigible enough to not cause any harm.

So far, we have not heard of any reports of anyone dying during sleep at night with the company of plants. On hindsight, if plants can really compete with us for oxygen at night and cause harm, then the inhabitants, as well as, our National Servicemen (army personnel) who are doing their training in the forests and jungles would have largely perished by now due to the lack of oxygen?