© Garden Cottage Nursery, 2021
Other Weather Effects
Coastal Gardening
We hope that these tips and suggestions help. Remember no
two gardens are exactly the same and what works for one may
fail elsewhere, so you can’t be sure if something works until
you have tried it. Failed experiments are all part of the fun of
gardening anyway!
A few last tips for choosing and planting:
•
For really windy sites look for silvery-leaved and/or
compact growing plants and they likely do well.
•
Plant in close company, mutual protection makes a big
difference, plant big groupings rather than lots of isolated
small groups or individual plants. Odd numbered
groupings of plants of the same type looks better too.
•
Plant young, large mature plants will struggle to establish.
•
Use the landscape, make use of any sheltered pockets
and nooks caused by landforms and buildings, don’t plant
tall growing plants where they will blot out the view in 10
years time.
•
When choosing plants from our online plant list or at the
nursery, look for these symbols:
Rainfall
What is the average annual precipitation and how is it
distributed through the year where you are. With little rain in the
summer watering may well be necessary so taps may be
needed in the garden. If rain in winter is more easily measured
in meters than millimetres growing succulents and many
Mediterranean shrubs is out of the question without exceptional
drainage or protection. The west of the British Isles has a moist
maritime climate with few areas with less than 700mm annually
and few with much in excess of 2,300mm. Much of the northern
part is towards the upper half of the scale. High rainfall does not
exclude one from gardening, on the contrary, there are
temperate regions which have more than 7 meters of rain
annually, and they all have lush indigenous vegetation, so if
there are plants that will grow in these extremes why not here?
But if heavy downpours are frequent, good drains are vital,
particularly on steep site where erosion can become a problem
and flat and bowl-shaped sites where water will naturally gather.
For heavy construction work, like digging drains and ditches,
and anything else that will likely involve a digger or other
machinery it is best to try to get it done before any planting
occurs.
Temperature and Day Length
The British Isles sit at a high latitude (c. 50º to 61ºN) and thanks
to the Gulf Stream, coming up from the Gulf of Mexico, has a
surprisingly mild climate. If one travelled due west across the
Atlantic from anywhere in the British Isles landfall would be
made in the tundra of Newfoundland and Labrador or even the
southern tip of Greenland if you live in Shetland. Though the
Gulf Stream keeps the climate mild we still have the day length
effects of high latitudes, this is especially pronounced in
Scotland where in summer the sun seems to barely set before it
rises again and hardly gets up in the winter. At higher latitudes
the sun's energy also strikes the earth at a more oblique angle
than nearer the Equator so there is less intensity to the sun the
further north one travels. Winter cold is an important factor as it
is a major limiting factor in what plants may be grown.
It is exceptional for anywhere on the West Coast to experience
more than -12ºC even in the coldest winters and some parts
barely feel frosts deathly touch. The sea acts as a giant salty
storage radiator and just a short distance inland is far colder in
winter.
The mildness of the winter climate allows us to choose from
literally thousands of different varieties of plants that colder
areas cannot grow without protection.
On the flip side as a consequence of our high latitude and the
maritime influence, the maximum summer temperature,
especially in the West of Scotland, is quite low. So apart from
getting sunburnt less often, plants from more Continental
climates often struggle to flower or grow well. For example
many trees from the Eastern United States require a hot and
well defined summer to fully ripen the wood for the coming
winter and without one will lose much of the growth put on
during the summer.
Greenhouse Effect
Having a conservatory, greenhouse or polytunnel allows you to
increase the range of plants and extend the growing season.
You can protect particularly tender plants by moving them in for
the winter. It allows you to grow on young plants more easily,
grow Tomatoes, Courgettes and such in summer and if you
have a passion for a particular plant group such as orchids or
cacti you can grow them in controlled conditions. With
somewhere to keep them for the winter one can make a
spectacular show of half-hardy perennials and tender shrubs for
the summer. This was all the rage amongst Victorians who
would 'Bed-out' anything, even if it needed to be or not! It is this
trend which William Robinson attacked in his seminal works
'The Wild Garden' and 'The English Flower Garden'. It is
valuable for the sheer impact it can have and for brightening
those dull days.
The problem with polytunnels, greenhouses and conservatories
is their initial cost, maintenance and also the extra work
involved in the plants grown in them. ‘Protected’ plants are
going to get more pests and diseases than their outdoors
counterparts and are entirely reliant on you watering them and
controlling their temperature. Consider also what your
greenhouse is to be made of, though if you can afford it one
made of glass is more attractive, in an exposed site it may be
too vulnerable or even dangerous, a polytunnel is cheaper to
replace and re-cover. Always site your polytunnel a bright but
sheltered position for best and longest-term performance.