SCOTTISH GROWN GRAPES
The chance of success
with growing grapes outdoors in Scotland is down to a range of factors, such as
choosing varieties that will ripen fruit in a cooler climate, selection of a
sheltered and warmer usually south facing site, and good growing husbandry. All
of these things are in our control, but they are not the end of the story.
Grapes need warmth and sunshine to grow and produce fruit which will ripen,
then in autumn a period of really good weather is essential to sweeten up the grapes
so they are either delicious to eat or have enough
sugar content to produce
wine with at least a 10% alcohol level or even higher. Our present climate in
Scotland is a bit lacking in warmth and sunshine so we rely on the
unpredictable nature of our climate to give us those better than normal good
years, but then what do we do with our grapes in the normal years. In time climate
change with a wee bit of global warming might suit some parts of Scotland but
at the expense of the rest of the world. However it might just mean we get
warmer temperatures but with a lot more rain, so the challenge to establishing
a successful vineyard is still a problem. Although attempts have been made in
the past to establish Scottish vineyards and some continue today, they are
probably totally reliant on favourable weather becoming more of a normal
feature. If Scotland should experience a period of better than normal weather
this will encourage more gardeners and growers to
experiment on a small scale
with grape production as we all love to rise to a decent challenge. It will be
down to these new entrepreneurs to try out numerous varieties to see which best
suits our climate and soils, but then we may find the best solution by breeding
desirable characteristics from a range of varieties and in time (could be
thirty to fifty years) we might have Scottish bred vines to grow and crop
successfully in commercial vineyards.
Brant grapes ready to pick |
Seigerrebe grapes |
Gardeners working on a
smaller scale do not have the same problems. This year I picked some Seigerrebe
grapes growing in my cold greenhouse
in the middle of August. This variety has
sweet Muscat flavoured grapes producing numerous bunches of small grapes which
favours wine. However after crushing, the grape must gave a 1.092 specific
gravity reading, which is high enough to achieve an alcoholic content of at
least 11%. As this was my first year with Seigerrebe and I only had enough
liquid for one demijohn, which won’t get bottled for a couple of years.
Rondo |
Last year the weather
was not on our side, so grape sugar content could have been better. I left
harvesting as late as possible waiting for some sunshine, so picking was done
both outdoors and under glass during the first week of November. I mixed my
Black Hamburg from the glasshouse with Phoenix grown outdoors on a south facing
fence and a heavy crop of the ornamental vine Brant. Brant produces numerous
small bunches of black sweet grapes. I had enough for two demijohns. After
crushing I only achieved a specific gravity reading of 1064, which would only
give me about 8% alcohol, so some water and grape concentrate were required to
produce wine.
Brant grape vine on house wall |
2016 has been a better
year, as the east of Scotland has been relatively dry and reasonably warm, but
we could have done with more sunshine in autumn to sweeten up the grapes. Harvesting
started at the end of October with Regent, Rondo and Phoenix, all grown on
south facing fences, and Brant on a south facing wall. Black Hamburg from my
cold glasshouse was added into the blend. My other three outdoor grape
varieties Solaris, Polo Muscat and Muscat Bleu never produced any grapes
whatsoever, so they are still under review.
Brant grapes grown on my south facing wall were picked first week November and after crushing will give two demijohns of red wine, but needed some sugar to give me 11% alcohol strength.
Brant grapes grown on my south facing wall were picked first week November and after crushing will give two demijohns of red wine, but needed some sugar to give me 11% alcohol strength.
Dahlia ready for storage |
Wee jobs to do this week
As cold weather is
just round the corner get ready to lift the dahlias if any frost is
threatening. Cut back the plants to about six inches and put the tops on the
compost heap. Lift the dahlia tubers and remove as much soil as possible. Tie a
label with the variety name to the main stem. I bring in my tubers to my cold
greenhouse for drying off before storing them in boxes in the frost free
garage.
END