What make a plant stop growing at a indisputable loftiness? I potted two Amaryllis bulb. Early on, they were reasonably different heights....
I potted two Amaryllis bulb. Early on, they were reasonably different heights. But by three weeks they be within a millimeter or two of ech other. What made them stop growing at a lasting height?
The final height of a plant is built into its genes. Your second plant hindered because of biological compensation. This is as the plants get elder the difference between them become less different. This happen as the plants grow they can access more water and nutrients so the difference at the emergence becomes smaller number important. The final rank can be determined by flowering in some species but it is mostly control by genes. We sometimes try to breed shorter plants (with double dwarf genes) so smaller amount plant energy is put into vegetative growth and more dynamism can be used for reproductive growth. An example is wheat which is now extremely short now and more spirit can be put into grain production.
Thanks Tim http://www.nuganics.com.au
Plants are similar to people. Their rise is controlled by their dna.
Probably one bulb was planted within a better soil, or had better light--and so grew faster. But eventually the other one over-involved.
Answers: Genetics...!