Register with us or sign in A member of the succulent plant
family, particularly adapted to arid and extremely hot
environments, and characterised by spines. Often flowers at
night. A term that refers to alkaline soil, which contains
calcium or calcium carbonate. A plant that favours chalky or
calcareous soils. A plant that cannot tolerate alkaline soil.
Described as ericaceous, calcifuges grown on alkaline soils will
exhibit symptoms of iron deficiency. A chemical element (atomic
number 20, chemical symbol ca). A soft, grey, alkaline earth
metal, essential for living organisms in cell physiology. A ring
or whorl of sepals, which may be coloured and petal-like or
green. Helps to protect the flower in bud. An internal layer of
cells between the inner bark and the sapwood of a tree, where
growth takes place. It gives secondary xylem and phloem, thereby
increasing the girth of the organ. A long, supple woody stem,
often used to support young or fragile plants. A general term
for disease that's characterised by p