Hi again it's Jason from Fraser valley rose farm and I'm here in my indoor propagation
room right taken these cutting edge here I've been reading them underneath humidity domes
that artificial lights what I want to talk about today is that artificial life in fact
when we talk about in general is the topic of how much later do your cuttings need to
route properly and the first thing I wanna point out is how unreliable your primary instrument
protecting life yes that is your eyes your eyes constricted and dilated peoples as you
move in and out of dark places and light places and so he compensates and can fool you into
thinking you have a nice enough like when you don't certainly you are going to get any
reliable readings from Los so you have another instrument in your pocket right now that's
your smartphone and there's an app you can download a free app from the play store I
did for android called the locks light meter by Dogo apps it's circled yellow icon I'll
give you some screenshots CC what to download that will be it is a scientific level of accuracy
but it certainly is far more reliable than your eyes telling how much money you need
and will do is I'll go through this room where I've had successful and less successful dimmer
places and show you those late readings and all compare that outdoors well.
To start with this tree that was just hovering over because it actually has really good routing
I can feel that these are starting to pull back from the base so they've gone past the
calluses degenerate into routing and isn't a bright area of the room service between
the 2 lights and has an access to window light as well so the way this works is it has a
sensor on the front and your phone it's not the same as the front facing camera and it's
not the same as the rear facing camera but if I place it flat like this above the Croft.
And you can see that even a little tilt like this will change what the reading is but I
hope you can get a picture of the.
Late reading there an inbox it's reading this around 1200 blocks which in this spot appears
to be a really good amount for routing roses.
Now here at the very dimmest corner of the table I placed these cuttings of a rugosa
rose snow pavement and placed over here because in previous experience I found that my rugosa
roses will actually drop leaves and brown out very very quickly under intense light
so I've actually intentionally decided to give them less late so let's see how much
less late they have over here hope again you can get a reading over there but on this corner
of the table it's around.
Between 8 and 900 locks is what I've been reading and that seems pretty consistent to
me with just its placement with the lights.
Taking this act outside now you'll see as I scanned around here that it says this is
not a sunny day this is what I would call a bright cloudy day and yet on the app here
I'm reading something like 6000 locks or let's say 5 times as much as I was reading on the
right location indoors which just gives you an idea of how intense and how excessive the
light can be outdoors for that reason when I'm propagating out of my greenhouse I usually
place a sheet covering over the outside walls of the greenhouse to get the right amount
of light you can also look for a C. a location outdoors that sort of semi shaded by overhead
vegetation or gets morning sun but afternoon shade something to keep that light level down
so that your cuttings don't crisp up in the intense light just wanna give you a quick
caution about the numbers I'm giving you today because obviously this is not a scientific
instrument and this out for me produce widely varying results from phone to phone to phone
although I'd be interested to hear that from you in the comments below one thing I will
say is I think can be useful just in terms of you locking your own.
Our efforts and successes and failures that if you know how much late at least your phone
was reading then if you change that and you see a difference then you can go and guide
your future efforts and placement of cuttings from there onwards let's talk just a little
bit about the physiology of your cutting and why you have to give this much attention to
light and other environmental details so once you cut out from the main plant it loses access
to moisture nutrients and sugar that can be moved around with throughout the plant so
it has to be on its own the problem is it can't handle as much light as it did and when
I was a part of the plant the reason for that of course is again lack of moisture from the
plant so it has to be given a lower level of light but it still does need light what
does it need light for well of course it's gonna get energy from the sun but it also
takes that sugar that it develops roots leaves and sends it down the stem and at the bottom
of that stem it's sending it signals it's sending it messages through that full of sympathy
to at that sugar solution that tells it to start to develop its own roots so you can
supplement that speed that along with a little bit of rooting hormone that will send a signal
to but it does start that sugar this developing through sleeves does have an important biological
rule of telling the plant how to route we talked a little bit about the intensity of
cuttings and how you can measure that with your smartphone but you can also measure it
by looking at the plants in the reaction of the plants to the amount of light if you're
giving it far too much light and particularly far too much light and heat you'll see that
they will brown out or yellow out very quickly Sir dropping their leaves in response to that
high high light intensity and so that's a good sign that you've given them too much
if you give them too little on the other hand what you'll see is they'll keep their leaves
still stay green like this but then they will just sit there and kind of do nothing for
a long period of time because it's just not getting enough energy to do what they need
to do as for duration of late your natural day length is just fine if you went for 8
or 10 or 12:00 hours of light if you're doing the artificial.
A light that's just fine I don't think there's any particular advantage to going up to something
like 18 or 2004 hours although I could be proven wrong that's fine once they have begun
to route once they've got this callous on what's to become to route I'd like to bring
them up to higher light levels relatively quickly once you're providing them with enough
energy to give strong growth in the rest on the green house behind me here that I don't
have sheet on here anymore because all of these cuttings are fully routed now and so
I need to give them enough energy to grow into healthy plants before they have to handle
something like winter or additional stresses in a greenhouse like this one here you get
high temperature stability that's one of the nice things about a big green house like this
but if you are growing a little humidity domes and one of the reasons why I took that exercise
indoors I just need to give you one final caution here about light levels is that in
a in an enclosed space like that that the light will produce obviously you know the
light the growth but will also track heat inside that container very very quickly so
there's kind of 2 reasons why are offering shade under a humidity dome early on as one
to manage the light levels but second not to trap all that excess heat that will have
it up above off from reading temperatures very very quickly and I'll just throw in a
couple of quick guidelines in Fahrenheit and Celsius about best reading temperatures all
right thanks so much for watching today I hope that answers some of your questions about
how much light you need to be successful with rooting cuttings and if you have any questions
about this or any other propagation topic please drop those into the comments below
the video.