Large Adeniums are generally everyone's favourite. I have met businessmen, retired parents and people who loves flowers are bound to love large adeniums. There will be those who prefers large adenium BUT it takes years to grow the plant to its large magnificient size that if wished to display in your garden at home.
There will be some who continuously add fertilizers to enhance it size but the plant may end up with rotten root or withered leaves. Fertilizers with high Nitrogen will cause the plant branch to outgrow its caudex and may not be able to flower for a very long time. Therefore, it is important to understand what type of fertilizers to use for your adeniums.
Seedlings are generally small in sizes and still in immature stage whereby constant care are needed. Different types of adenium could produce different adult plants. Adenium Arabicum, my favourite among all adeniums could grow as tall as 10 feet, almost twice my height and it may takes you 35 years to achieve that height. No one knows for sure how long an adenium will live but my friend's arabicum is already 36 years old. It's priceless and if anyone is keen, he may let it go for USD 50,000. This plant was given to him by his dad.
The image on right are different types of adenium species. My favourite is Queen Arabicum. It is called the "Queen" to signify that the plant is the Queen among the Arabicum families. It grows large and sturdy with bushy top. The image you see above are at least 1.5 meter in height. That is about 5 feet and the age is about 6 years old.
Black Knight Arabicum is another name given by adenium experts due to its skin color. It is generally black and dark. It generally grows up to 8 feet with super large caudex. What you see on this picture is small but the width of its caudex is about 3.5 feet. It is one of the favourites among growers like us.
Giant Socotranum is another hot adenium which only serious collectors will appreciate. In Malaysia & Singapore, many of us love large sizes but for socotranum, you do not get so tall plant as this is considered a dwarf adenium with many branches above its body. Thai collectors would appreciate this plant as compared to others as it is costly. To get its seeds is not easy as well. This is like trying to get a Golden Arowana fish to lay eggs and make it fertilized as compared to the common Arowana fish. The above image with the Giant Socotranum is about 2.5 feet in height aged 8 years old.