Get more of David's tips and suggestions on how you can get the best from your Hydrangeas. In this video he shows how you can prune Hydrangea arborescens (Smooth Hydrangea) types. Following on from our other videos on Panicle and Mophead Hydrangeas, this one explains how you can recognize and grow this type of Hydrangea, and get it off to a terrific start in early spring.
Well hello and welcome to Overdievest Nurseries, this is David Wilson on a beautiful sunny day
in early spring. If you've been watching any of the other videos on this channel,
you will have noticed that we put out a few talking about the various types of hydrangeas.
We talked about the large mophead ones, they're the ones that are pink or blue, then there's the
big panicle hydrangeas with their kind of conical shaped blooms that are white and sometimes go
towards pink. And in the middle of it we also mentioned another type that's called hydrangea
arborescens, in fact it's a native species. And out of that are some selections that have been
developed over the years of which the most popular one is a big white flowered one called Annabelle.
Beautiful variety and does exceptionally well, except the heads are so big sometimes they flop
over. On the other hand what we like is a variety or indeed an improved version of Annabelle,
this particular one here that's called Incredible. This has big strong white flowers that are
sometimes up to 12 inches or so wide, beautiful with strong stocky stems and therefore it doesn't
flop over so much. But within the family of the arborescens types, there's also several other ones
too. Invincible Spirit is one that comes to mind, and then out of that there's different varieties,
there's one called Limetta, one called Garnetta, one called Wee White, in fact a whole series of
them, really beautiful and the most important thing I want to tell you is, very, very easy to
grow and also easy to prune. So if you're somebody that's kind of wondering whether you can really
grow hydrangeas or not, this is definitely one that you should start off with and one that you
should enjoy. They're really very easy and let me show you what you do now at this time of year in
early spring, and that is to prune them. It's really very simple and easy to do and this is how you do it.
Now as you see, we have planted one, two, three, four, five plants here, they're going to grow about four to
five foot high. These are relatively young plants, just really going into their second year, but you
can see already they've started into growth, and these are the old flowers from last year, and if
you look here you'll see how each of these stems has grown out, it's now making young fresh growth,
and then it grew out last year, grew out, grew out, and then carried the flowers on the tips of the
growth. So that gives us a clue as to how to prune them. We've planted these here, just so you know,
about four or five foot apart, so one day when these grow up and fill out, this is going to be a
whole series of white balls that are going to be flowering here during the summertime. If you've
seen them in somebody's garden, or indeed even online, or on our websites, you can't miss them.
They're absolutely gorgeous, big pristine white, very noticeable flowers during the summertime
on these strong stems. Now I've probably already given the game away when I explained about how it
grew out here on the current year's growth, and then carries its flowers. Like other things that
flower on the current year's growth, the more it grows, the better, stronger the flower performance
is going to be. So what you're looking for here really, is very, very simple. The first thing I do
is go in and take all of these old dead shoots out here that are in the center of the crown.
These are ones left over from, well, the year before last really, and if you take those out
first, that'll begin to let you see what's going on with the plant, and immediately when I look in
here now, you'll see that these are growing so strongly that they've already started to make
some shoots here from the base of the clump, which is very nice, because that's exactly what we want
to have happen. I should also mention that the time to do this is almost any time when the plants
are not physically strong growing. That would mean you could actually probably prune these during
the wintertime, or maybe even late autumn. Personally I think the best time to do it now
is in early spring, and in fact maybe a week or so ago would have been the absolute ideal time,
because you'll see these plants have already started to put on a little bit of growth. That
really doesn't matter, it's not going to affect things, but as you see now, what I'm doing is I'm
going in here and trimming these back at a couple of sets of buds from the base. Now it's no harm
at all if you feel a little bit more vigorous than this in going in and cutting some back a
little further, certainly the weak ones like I just did here, you can trim back a bit harder,
but the main stems that are going to carry the flowers out from it here, I would prune those
back a little less severely, probably taking off about two-thirds of the growth and leaving
about a third if you wanted me to give you a little bit better guidance. Now these types of
branches are really so forgiving that you could, if you wanted to, go back and cut them back even
harder than I'm doing now. You could in fact go right back to here, but as you see what I'm doing
is coming out here about two-thirds of the way down the stem and I'm just cutting it off above
a set of buds. These buds are now going to grow out and they're the ones that are going to then
carry the flowers during the summer time. So as you see I'm really just going around here now,
there's a dead one that comes out, snipping it back at about I suppose maybe five or six inches
from the base and really just chopping all of this old growth off here because now what's going
to happen is that these stems are all going to grow out and they're the ones that are going to
grow out and then carry the beautiful big white flowers in the summer time. Going to be gorgeous!
So just to recap, the first thing to do is to go through, and in fact you don't even need your
pruners often, is to take out any of these shoots here that are dead. That material there is brown
and dead and breaks easily, that's why it comes out. You really don't even need a set of pruners
to take it out, but it's not doing anything so you go through and take out all of these dead shoots.
Then what I do is I go through and if there's any weaker, thinner shoots then I'll cut those back
a little harder. But then I go through and take out some of the stronger shoots here and cut those
back a little bit lighter, say to about two-thirds of the sow down the stem. And that as you see
immediately now is starting to open up the plant and let light and air in at the center of the
plant and encouraging the young growth that's going to come out here from the center of the
plant and that's the stuff that's going to really produce all of those beautiful flowers. And then
just to help it on its way and get it off to a good start, I like to put down a dressing of a
well-balanced fertilizer. This is a slow-release fertilizer, so it will continue to provide
nutrient right through the whole of the growing season. This is a hardy, strong-growing variety
and it will really respond well to the fertilizer. The instructions tell me to put down about two or
three spoonfuls per plant and that's what I'm doing, just sprinkling it around the outside here.
So there you are, it could hardly be easier than that. We have now pruned the five plants,
they're poised to grow out and give plenty of flowers during the summertime,
and this technique you can apply to all of the other hydrangea arborescens types too.
This is David Wilson, enjoy your gardening, it's good for us and it's very good for our
environment too.