Pest and Fungus Control Practices in an Organic Garden

I have been asked about my mulching and watering practices that I use to deter black spot on my roses.  First of all, I choose disease resistant roses, David Austen roses, Don Juan and Blaze, Peace, a few knockouts, Queen Elizabeth, Zephren Druin are all good but I also have a few tea roses and unknown hybrids that are a little more susceptible.

Second, all watering except for natural rain comes through a soaker hose I have attached with a timer for my cutting garden where most of my roses grow.  This prevents splashing on the leaves and minimizes the spread of black spot.

As for mulch, I clean out all last year’s mulch by January and prune the roses as needed.  Then, because some of my flowers re-seed themselves, I hold off on the mulch until any new plantlets have declared themselves.  This ensures my larkspur, bachelor button, and any new Rudbeckia and cone flower can set seed.  Then in May, I apply a fresh covering of live oak leaves at 3-4″.  I use live oak leaves because that is what I have and although live oaks are evergreen, they do “shed” a truckload of old leaves in the spring which is exactly when I need them.  Anything I don’t use goes to compost with a generous helping of bloodmeal to help them break down into great compost by fall.

That usually does it but sometimes our springs are a little soggy like this one has been and we didn’t have even one hard freeze this year so fungus and insects are at a high point and feasting on my roses especially.  Then I do use a fungal spray which also deters feeding insects.  Here is the recipe:

  • 4 tsp. Baking Soda
  • 1 Tbsp. Horticultural Oil (I use a light year-round oil)
  • 1 Gallon of Water

Mix and apply to the leaves with a pump sprayer (pictured below) or a regular spray bottle.  I use both.  That’s it.  The baking soda takes care of the fungal infections and the horticultural oil encourages the mix to stick to the leaves and also deters the bugs.  I have used commercial sprays in the past for both fungal and pest control and I can truly say that going organic has not reduced my ability to control these garden problems.  Plus, when I see a tomato (also planted in my cutting garden) I can eat it right on the spot like an apple which is my favorite way to eat a homegrown tomato.

I keep the green spray bottle near a struggling crepe myrtle that is having a problem with big white nasty aphids.  I have transplanted this tree to 3 different areas as my garden has grown and it is now in a spot that I like but it does not have as much sun as these little trees like so it has been susceptible to these bugs that came in on some azaleas from the nursery.  This is what they looked like a few weeks ago but I am glad to say that most of them are gone.

So that’s it.  Water and feed your plants and add compost at least once a year.  Strong healthy plants are the best defense against an invasion of bugs or disease.

Organic Gardening and remember to “bee” positive!

P.S.  BTW the baby robins are all doing well.  Mom and dad are flying their tail feathers off to feed the triplets and this is the sixth day from when they hatched.  Their eyes are open today and they are looking less like tiny dinosaurs and more like birds.  I will post some pics of the little family tomorrow.

Olives and Roses: A Virtual Tour

This magnificent rose garden was created on the site of a family olive grove, which has been owned by the same family for half a century. Located in the San Joaquin Valley, this olive grove was originally developed by the railroads, before recently being transformed into orange groves.

For the full story click here:

Beautiful Gardening and remember to “bee” positive!

I Miss this Plant: Summer Casualties

I would love to tell you that I never lose a plant and that I have an innate sense of where every plant will thrive best and give them the exact care they need.  Unfortunately this is not the case.  I have always loved Forsythia.  The bright yellow blooms in late February/early March signal spring has arrived and brighten up any landscape when not much else is going on.  I knew I wanted one, I just wasn’t sure where to put it.  So I bought a small shrub about 3 years ago and nursed it in the back yard until I had a  home for it. This is the blooms in Year 2:  When I finally got around to landscaping the front yard this year, I used a yellow and purple colorscape and finally had a home for my Forsythia shrub.  I am not a fan of shaping this shrub and that’s just as well as the yellow blossoms bloom on last year’s wood.  So in December when it was dormant, I gently transplanted my Forsythia into a large bed in the front surrounded by Yellow Knockout Roses.  The plan was that the Forsythia would bloom and then when it’s leaves came in in the summer, the Knockout Roses would take over the show.  Great plan right?  Well, you know what they say about the best laid plans of mice and gardeners don’t you?

Needless to say I have lost my Forsythia to the summer heat.  As a new transplant, it should have had enough time to re-acclimate since I moved it in December and it was beautiful this spring:

But this summer has been brutal even by Texas standards and although the knockouts are great and most of the salvia (Mealy Cup Sage) I grew from seed are doing fine, sadly my beautiful Forsythia did not survive.  Here is what it looks like now:

So long for now but I will be getting another.  I may just put it under the tree for a little shade next time.


Happy Gardening and remember to “bee” positive!