Hi again it's Jason from Fraser Valley Rose Farm today I want to talk to you about growing roses
in a warmer climate than my own places like the tropics and subtropics where you'll be dealing
with much higher temperatures and higher humidity seasonally maybe even monsoon and no cold winter
really to speak of now obviously i'm going to be talking a little bit outside of my comfort zone or
i guess you could say my climate zone in this but the general conditions around dealing with heat
dealing with humidity dealing with a lack of cold winter temperatures those are things i can speak
to and i'll do so in this video here we're going into a period now at my farm where the roses are
starting to go into dormancy now it's october here going into winter and you can see i'll put up some
pictures of some roses that are putting up a good fight they're trying to bloom straight through
but eventually they will give up and they'll do what smart roses do
which is ripen their fruit let go of their leaves and firm up their stems to last the winter
this by the way is the natural cycle for roses in general roses are a northern
temperate climate shrub meaning that they do have a built-in cycle of dormancy
it benefits them in a number of ways one of which is that if you're in a climate that goes into a
rest period you don't have insect pressure and disease pressure carrying on all the way through
the cycle so at a certain point everything goes dormant the leaves drop you can do a cleanup and
get rid of those leaves so you don't overwinter those insects and pests and then they spring back
forth the spring with renewed vigor and bloom really strongly so i want to talk about some
strategies of how you deal with a very different set of climate conditions hang tight for that
first i want to talk about dealing with the intense heat and bright sunlight that comes
with the hottest portion of your season and really the goal here is to bring your plant through in
good enough condition that it can rebound quickly in the cool season and bloom strongly some tips on
that are to provide some shade now this comes with sighting your rose when you're planting your rose
think about the hottest portion of your season if you can give your plant some midday shade some
afternoon shade or even some high dappled shade that will improve its condition over those hottest
portions of the season next thing you want to talk about is water you do need to water i'm not saying
frequently but you do need to water deeply that is not just a spray of water on the top of the soil
and think that's enough you need to water for three minutes four minutes five minutes enough
water to really soak the area and check do a little dig down beside your rose afterwards
and see has the water actually soaked down into the soil and provided enough moisture provide a
mulch on top that mulch will help to retain that moisture after the watering you want to avoid also
during this period stressful things that you can do to your rose things like pesticide application
heavy pruning or heavy fertilizing all of which can induce shock and stress in the plant if it's
already stressed out by high temperatures save those activities for the colder shoulder seasons
let's talk about the wet season now whether you're in an area that just gets constantly high humidity
or a place like mine that gets seasonally high rainfall or a full-on monsoon our concerns are
generally the same it's just a matter of degree in my area when we go through the rainy season
i usually end up with a lot of black spot a lot of foliar fungus on my plants usually end up with the
flowers having some trouble opening if they're very fully petalled flowers and i usually see
a general decline in the condition of the plants just coming with them being constantly barraged by
rain so one thing i have to watch out for here and obviously you'll have to watch for in your area if
you have high rainfall seasonally you're going to look for drainage right away you don't really the
roses will not tolerate a long period with their roots in standing water so that's number one
number two you're gonna aim your deadheading your pruning your stripping of leaves all of that
you're gonna aim towards trying to get that foliar disease off your plant and trying to make it so
there's air circulation within the plant so you're looking for that open vos shape that comes with
pruning so you have every stem has its own space and some room around it to dry off and air out so
that the fungal diseases don't get such a foothold on your plant your plant because you're getting
such high levels of rainfall there's going to be a general leeching of the soil that is if you put
in any fertilizer it's just going to leach away so just be ready towards the end of your rainy season
to buff up some of that fertility so that your roses can recover better from that now as for
managing fungus yeah you can try things like neem oil if the temperatures allow you can try things
like sulfur don't try sulfur in conjunction with any oil products that's a warning for you and you
can try potassium bicarbonate or baking soda as a as a as a solution to these things i talk about
that a little bit in my black spot video i have a formula for it there uh in general i don't go for
the really really hard chemicals i usually try to hit it better with the cultural things like
stripping the leaves deadheading and pruning for open air circulation usually will cover it for me
if you come to the end of your rainy season a lot of foliage has dropped off you may want to clean
that out from the base of your plant and replace your mulch at that time the lack of a cold season
does pose a challenge for certain roses i've done videos in the past year about the alba roses and
the centifolia roses both old garden roses from europe and they do very poorly in tropical and
subtropical areas so you may want to avoid those ones the roses that tend to do the very best are
those that are closely related to the asian roses the china roses and the indian roses that impart
the repeat blooming to modern roses they've been bred in pretty extensively so you have a
pretty good chance with most of the modern rose groups things like flora bundas and hybrid teas
but certainly like Tea-Noisettes and those i'm going to go ahead and put in a section now where
i give you some pictures and some recommendations of the names of roses these are coming both from
my experience of things that do well in warmer periods of the year but also from those rose
societies around the world where they've made recommendations let's start with Belinda's
Dream a mid pink shrub rose with a really nice scent and here's Elena a hybrid tea in soft yellow
Aloha a climber with a really complicated color sort of pink with tones of apricot mixed in
Don Juan in dark red and a punch you in the nose kind of damask fragrance
Beverly also quite nicely scented and getting a reputation as a good performer in warmer climates
Julia Child i love this mid yellow color and it has licorice kind of scent
Cinco de Mayo with its wonderfully wavy petals if you had a mind to try some of the old garden
roses you could try old blush a china rose in pink that just about survives everything
Sombreuil and Gruss an Teplitz are other choices you could look at alright that's it for me today
thanks for watching if you could suggest any other roses that do well in warmer or
more humid climates you can leave those in the comments below again thanks for watching