Wednesday, February 12, 2020

Biochar for gardeners

Biochar is charcoal used to improve the quality of soil for growing plants. Biochar particles mixed into soil will make the soil loose and friable for better water and air penetration To be effective the particles should be 1 - 10 mm diameter.

In the Secret Garden of 1 Utama, I mix biochar with soil in equal proportions and top up from time to time with pure biochar. We buy biochar by the tonne. Biochar is now available in small packets for  home gardeners, labelled as Horticultural Biochar Mulch.

Supplies can be purchased on line at

Those interested can get 10% discount if they cite Promo Code francis 10 Discount 10%

Tuesday, January 28, 2020

The world’s largest flower, Amorphophallus titanum, in Kuala Lumpur

The world’s largest flower is Amorphophallus titanum, a rare species, native to Sumatra. The flowers may exceed 3 m in height and 1m diameter.  

Photo shows two young plants in December 2019, each with two leaves; the upper leaf twice as tall as the lower leaf

I managed to obtain two seedlings and had them planted in the Secret Garden on the Rooftop of the 1 Utama Shopping Mall.

The plants are reported to produce one leaf a year, each leaf bigger than the previous one. The final leaf is the largest, with a stalk that looks like a stout tree trunk, reaching 6 m (20 ft) tall and carrying a single massive leaf that is spread out to 5 m (20 ft) across,and  divided into many leaflets, to mimic a tree crown. This incredible 'one-leaf tree' eventually dies down and disappears. After a few months,  an enormous flower will appear out of the ground. It is said to take 7 to 10 years for a plant to get big enough to flower. This description is  based on plants grown in greenhouses under artificial conditions in UK or US. They may behave differently under open tropical conditions.  

I got my plants when they were barely 15 cm (6 inches) tall, in July 2019 and planted then under full sun. Each plant came with one leaf. The next leaf appeared in October and the third in December: three leaf cycles in 6 months. Already it is clear that they produce more than one leaf a year. I expect them to flower much earlier than 10 years. Maybe two years?

The Secret Garden is open to the public on Saturdays, Sundays and Public Holidays. Those who are interested can now observe these plants at close quarters. 

Monday, January 27, 2020

Monday, August 19, 2019

Is Rafflesia an Angiosperm?

Rafflesia arnoldii is well known as one of two contenders for the title of World's Largest Flower, the other contender being Amorphophallus titanum. Both are native to Sumatra. Rafflesia arnoldii has a close relative in Peninsular Malaysia--Rafflesia cantleyi. In March 1918 I was given the opportunity to embark on a detailed study of Rafflesia cantleyi using fresh materials supplied by the Forest Research Institute Malaysia as part of its development of a Rafflesia Research Center in the northern part of Perak State. 

Rafflesia was described and given it name by the British scientist Robert Brown in 1821. Brown followed up with another paper in 1834. These papers were remarkable for the way Brown described the difficulties he had with Rafflesia. Although he had classified Rafflesia as a dicot flowering plant because of its 5-petalled flowers, the structure of the female and male organs are utterly different from all other flowering plants and Brown was not afraid to say so. However, instead of stimulating further critical enquiry, Brown’s misgivings have been ignored. In re-examining the morphology of Rafflesia in detail I have come the conclusion that Rafflesia is so fundamentally different from other flowering plants that it should be placed in a separate category of its own. It is a flowering plant but not an angiosperm like other flowering plants!

However, molecular biologists have gone the other way and embedded Rafflesia in the angiosperms close to or within the family Euphorbiaceae. My first attempt to publish my findings was rejected because  the editor and reviewers considered the matter to have been settled by molecular biologists.

As a scientist, I have always believed that every theory is science can be reexamined at any time and that this is what keeps science alive and relevant. In this case, new evidence is provided by photographs of structures made visible by careful dissection under a microscope. Those viewing the photographic evidence are free to evaluate the evidence themselves.  

I was able to get this paper published in the Journal of Tropical Forest Science and for those who are curious, here is the link to the paper.

Journal of Tropical Forest Science 31(3): 286–297 (2019) Ng FSP

Tuesday, August 13, 2019

Another review of  Tropical Forest Scientist, just published in the journal Huntia,

Huntia 17(2) 2019 pp158-159. Ng, Francis S. P. Tropical Forest Scientist: Francis S. P. Ng & FRIM, 1964–1991. Kepong, Kuala Lumpur: Forest Research Institute Malaysia, 2018. 200 p., ill., maps, port. (some col.). $18.00 (US) plus postage. ISBN 978-967-2149-07-1 (paperback). Available from Forest Research Institute Malaysia 

Francis S. P. Ng spent 27 years of his career at the Forest Research Institute of Malaysia (FRIM). Following Malayan independence from British rule in 1957, it took eight years to “Malayanize” the Forest Department, which included FRIM. Ng joined FRIM near the end of that process as a first year pupil botanist in 1964. This intelligent, curious and highly motivated fledgling scientist hit the ground running, eventually becoming an expert in tropical tree biology and the Malaysian tree flora through exploration, experimentation and endless curiosity about trees. He took time out to earn a Ph.D. at Oxford in 1971.

Exploration of Malaysian forests led to numerous projects. In 1970 he began an extensive study of tree seedlings, seeds and fruits. A related study on seed germination eventually covered around 630 species. Experimentation on regeneration in logged forests yielded important insights.

His study of flowering-to-fruiting periods in trees led to a better understanding of gregarious flowering in Malaysian forests in which many species flower at the same time followed by mast fruiting unlike the more predictable times seen in non-tropical deciduous forests. His pioneering paper on “crown shyness” in several tropical tree species—treetops not in contact with each other, allowing unfiltered sunlight to pass through the canopy—was met with excitement among international dendrologists. He wrote on another aspect of tree growth in a joint paper with Francis Halle, who had already worked with others on classifying tree architecture. Missing from their work was an explanation of the architecture of the mature crowns of canopy trees, which completely change shape after a certain stage of growth. Ng’s insights into these and other topics unlocked research problems for others and led to his being invited to speak at numerous international symposia.

His first overseas symposium was Tropical Trees as Living Systems, at Harvard in 1976. He was one of 27 leading tropical forest scientists invited to contribute to the 1978 book of the same name. His chapter on germination theory discussed a problem with the presentation of only two European germination types in standard texts, but Ng found that four types occurred in the tropics. He comments, “Until then I had no idea whether my research, published in The Malaysian Forester, was having any international impact” (p. 79).

In 1978 Ng was transferred to lead plantations research in FRIM, a move by the new director to discontinue discrimination in staff development and promotion, and later that year was promoted to deputy director of the Forestry Research Division. By 1981 FRIM had become the intellectual center of Malaysia’s forestry sector. In 1986 Ng was appointed deputy general of FRIM, and he worked to put FRIM on a solid scientific footing before his impending retirement. He also spent considerable time collaborating with and mentoring others at FRIM and in the region. He worked on a joint research project with every new scientist to come under his charge to start them on their research careers. He also advocated for the importance of networking and information sharing. As time went on he shared more of his expertise with other governmental research institutes locally, regionally and internationally. In 1990 he was hired at the Food and Agriculture Organization of the United Nations (FAO) as chief of Forest Education, Research and Training, based in Rome. After six years away he returned to Kuala Lumpur. In 2009 he received the David Fairchild Medal for Plant Exploration from the National Tropical Botanical Garden.

Much of Ng’s published work is in FRIM journals. His books include Tree Flora of Malaya (1 9 7 2 – 1 9 8 9, volumes 3–4 edited by Ng); The Tropical Garden City (1990) with Salleh Mohd Nor and Wong Yew Kwan; and Manual of Forest Fruits, Seeds and Seedlings (1992), covering more than 600 species. Ng took particular satisfaction from the Tree Flora of Malaya: “I think the Tree Flora of Malaya was the only flora ever completed in a former colonial territory after independence” (p. 175).

Ng has given us a narrative interwoven with information about tropical trees and forests, the 20th century Malaysian scientific world and various intriguing botanical problems. The format of the book combines chronological journal-style entries with grey text boxes expanding on topics in the journal entries, such as tree biology, forestry, science, post-colonial politics and more. The book offers an interesting and compelling recollection of a scientific world unfamiliar to many in the West. An index and two maps are included, one keyed to an accompanying list of the Malaysian forest reserves. —

A PDF of the book review section of the 17(2) Huntia, is now available on our Web site (