hello! i'm currently studying for an ND in Arboriculture, a part o
which is that we have to cover pricples of plant science. I'm in th
middle of an assignment which has brought up a few questions i wa
hoping some one could help me with or at least point me in the righ
i would be right in saying that Ephemarls complete several life cycle
in one season?? but what sort of plants are ephemeral and what are th
advantages and disadvantages? Simmilar what are the advantages of bein
biannual, annual or perenial?
during a lecture we were told a great many things however i have foun
a number of them are contradicted by information on the internet whic
is resulting in a fair bit of brain ache
ND stands for National Diploma. it will entitle me with my membership t
the arb association in the uk the have the title M.Arbor.A. Whe
complete i will be climbing for the company i currently work for with
view to doing a HND (higher national diploma) on-line and continueing t
add to the qualifications on my Nptc card - for those uniformed i
covers things such as chainsaw maintance, felling and dimantling o
trees, dealing with windblown trees, climbing and arial rescue, use o
a chain saw in a tree, and whole host of other things from pestercide
There are different definitions of ephemeral. In botany it generall
means 'short lived'.
Dictionary.com says there are 5 definitions.
"passing, short-lived, transient, transitory, fugacious"
I think of plants that are ephemeral as being fleeting, not necessaril
short lived. I have plants that are considered 'spring ephemerals' an
they appear in spring, bloom and disappear (go dormant). The sam
plants will often appear every year, but for a short time and then g
dormant. Daffodils are an example. As far as advantages, I think th
plants take advantage of the growing conditions where they are locate
and it's the genetics that determine their needs. The daffodil bul
stores food, using the leaves. It produces a flower and a seed tha
will eventually become a bulb. It blooms when the weather is cool an
the sun isn't as hot as in summer before the trees have leafed out s
it can have that sun for manufacturing the food so it can flower an
set seed. It needs cool weather to survive, determined by the genetic
of the plant, and goes dormant in the heat of summer. There are deser
plants that are ephemeral, some are annuals, some perennial and som
biennial. They appear when the weather conditions are appropriate fo
them to thrive, bloom, set seed and then either go dormant or die.
I don't know the answer to your question about advantages of bein
perennial, biennial or annual.
Garden Web has a forum for 'Botany' where you might get bette
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