Showing posts with label Fungus. Show all posts
Showing posts with label Fungus. Show all posts

Friday, January 3, 2014

The Cottage Garden = Functional Gardening

As the new year begins, gardening catalogs are sent out to inspire and take advantage of gardeners' dreams of the perfect garden.  Now is a good time to consider stretching your gardening boundaries.

I have always been drawn to the cottage garden.  Informal, inviting, lush, bountiful, overflowing, beautiful ... functional.  Functional?  Yes!  And as I plan next year's garden, that is becoming more important to me.  I have a small yard.  Too small.  I want more roses.  I want more vegetables.  Why should I have to choose one over the other?  Why can they not live together in peace and harmony?  It is not as though the gardening police are going to come arrest me if I decide to allow Tam Jalapeno  Pepper to live next to Graham Thomas Rose.

That is what a cottage garden is all about!  Though in recent years cottage gardens have become something more akin to organized chaos, they were originally making the most of limited space. Peasants only had a small amount of land, so in the space of their vegetable and herb gardens, they would grow ornamentals that had been passed along or propagated from the gardens of their masters.

What do you have when you plant herbs next to ornamentals next to vegetables?  Companion planting!  The biodiversity repels pests and attracts beneficial insects.  It keeps fungus and disease from jumping from plant to plant.  It aids organic gardening.  It creates interest.

For now I will keep my designated vegetable gardens for larger growing vegetables, but so those plants have more room, there is no reason to not tuck plants such as herbs, peppers, eggplants and okra (a relative of Hollyhocks and Rose of Sharon) in amongst the flowers.


Sunday, October 6, 2013

Why Organic Garden?

It is very easy for gardeners to not see their gardens as they truly are.  Some tend to see them as they imagine them to be, not looking beyond the limits of their own yard to see the vastness of the gardening world or the effect they have on it.  Others, like myself, tend to be full of next years. The garden is an ongoing process, maybe something did not turn out as planned, is in the process of filling in, or there is another plan waiting to commence.  I look in my garden and have to make a special effort to see what did well rather than what needs doing.  Working in others' gardens helps to keep things in perspective, but this year that has been limited.  The first half was spent caring for my dying Grandma, the second half mostly spent recovering.  Lots of heat, no rain, some things thrived, others not so much, lots of planning of what to do better and dreaming of next year. I knew the garden overall looked decent, but there was so much that did not meet my expectations, and like a pimple on your face, you assume that is all everyone else sees, too.

A glimpse of my garden in early October.
Then I went on one of the first jobs in months and perspective was regained. Despite the hard year and many things already being finished and cut back for the year, my garden is shifting into a fall display.  The garden I worked in, though well established, was shutting down for the season. Many of the plants we had in common were either finished blooming or were nowhere near as lush in her garden.  I came home, and seeing my garden in a different light, was amazed.  Why the difference?  She watered more than I did, fertilized and sprayed for insects and fungus and I did not.  What did I do that she did not?  Instead of focusing mainly on plant care, I also focus on soil care and organic gardening.  Healthy soil equals healthy plants.  Chemicals do not.  I have written on this before, but it is so important that I am going to do so again because I cannot stress it enough.

Think of it this way ... If you feed your kids a diet of candy bars and potato chips, they are going to get big, maybe even look healthy for awhile.  However, they will not be getting the nutrients they need to remain healthy and their bodies will struggle.  Eventually they will get sick with something that their body cannot handle and be given an antibiotic.  The antibiotic kills most of the bad bacteria, but the good bacteria are sacrificed as well and the system is thrown out of balance, creating the perfect environment for a fungal infection and health is still not obtained.  A healthy diet provides the nutrition needed for a strong immune system whereas overuse of antibiotics and antifungals lead to superbugs that everyone has to deal with.

The same is true in the garden.  Plants fed a diet of chemical fertilizers do not get the nutrients they need to be healthy, only to grow big fast.  New growth is attractive to insects who move in to feast and infect the plant with disease.  Fungal spores are introduced by various means.  Roots struggle to grow in compacted soil, using up more of the plant's energy reserve. The plant struggles and sprays are used, killing beneficial insects, further throwing off Nature's balance and creating superbugs that effect everything from the food we eat to the clothes we wear.  There has to be a better way.  Forests, jungles and grassy plains have remained for thousands of years without, or until man's involvement.

Back to the soil.  Beautiful, nutrient laden, soil.  Full of organic matter, maybe even a nice, sandy loam. It does not happen by accident and it must be maintained as organic matter breaks down, but when it is present, plants thrive.  Roots easily grow deep in the loose, moisture retentive soil, taking in the micronutrients needed for health and saving energy for fighting pathogens.  Less water is needed.  Weeds that compete with the plants are easily pulled.  Bugs will come, both good and bad, but the plants will be strong enough to hold their own until the good overpower the bad.  Fungus may appear, but a healthy plant can usually handle it.  Planting a wide variety of plants attracts different beneficial insects and prevents bad bugs, fungus and diseases from easily jumping from plant to susceptible plant.  Balance is maintained.  Of course, some plants have been highly hybridized into something that Nature never intended, something that would never survive in Nature, and no matter what the care, are so finicky they will struggle.  One must then make the decision to risk the balance of the entire garden for the one plant, or replace the plant for the good of the garden ... and Nature.

Also see Wait! Don't Grab That Spray!

Wednesday, September 18, 2013

Sclerotium rolfsii

A few years ago I noticed a few Hostas were not doing so well, but figured the weather was getting to them.  After a few days I went out and they were nearly all dead, leaves and stems just laying there.  I picked them up and at the base were what looked like little insect eggs that I assumed were some sort of spores.  After a little research, I discovered they were Sclerotium rolfsii.

With surgical precautions and precision, I cut the Hostas back, dug them and the surrounding soil out, disposed of the foliage and soil, soaked the rootstock and tools in a 10% bleach solution, poured the bleach water in the hole, rinsed, potted and placed the rootstocks in quarantine until I was sure they were safe to replant.  A lot of work, but it proved successful.

This year it came back and I found it in multiple gardens, perhaps imported in topsoil.  To begin with, I successfully treated it similarly to before.  I began finding it in more plants though and was getting discouraged.  Digging up plants is hard, bleaching soil destroys more than the spores, and it seemed never ending.  Fungicides are mostly ineffective except for a few which are not available without a license.  It was time to begin my own research and experimenting.

Since Neem oil is anti-fungal, I searched the internet to see if there was any information regarding it and Sclerotium rolfsii and found that it did show some promise.  I mixed 1 1/2 teaspoons of 70% Neem oil in a quart of water and sprayed Sclerotium rolfsii spores with little results.  I then had an idea - Oregano oil, which amongst other uses, is anti-fungal.  I could find nothing on the internet regarding its use in killing Sclerotium rolfsii, so I was on my own.

I dropped a few drops of Oregano oil directly on a few Sclerotium rolfsii spores.  They dried up immediately and never spread.  Using straight Oregano oil is not practical, so I experimented until I found a dilution that was effective.

This is the method that ultimately worked successfully for me.  I have not only used it on Hostas, but on Ajuga, Phlox and Siberian Iris.  Cut the plant back as far as possible and clean out all debris, carefully putting everything in a trash bag to be thrown away.  Sclerotium rolfsii spores can easily hide, so doing this makes inspection and spraying much easier and more thorough.  Fill a quart spray bottle with water and add one dropper full of Oregano oil.  Spray to the point of drenching the affected plant and surrounding soil, shaking the bottle frequently to assure the Oregano oil is thoroughly mixed.  Inspect and repeat daily as needed as the spores are so insidious that one missed spore can quickly re-infest when the conditions are right.  Individual crowns may be especially difficult, and at one point I poured a little of the mix into some of them to insure coverage.  It has been several weeks since I have found any spores, and as quickly as they spread, I am hopeful they are under control.

Not all Oregano oil is created equal.  Though I am sure there are other brands as good or better, what I used was California Natural Wild Oregano Oil with 70% Carvacrol.  I cannot guarantee results, but when all else has failed or the situation seems hopeless, it is certainly worth trying.

Prevention is important when it comes to Sclerotium rolfsii. Closely inspect, some even go so far as to sanitize, any plants you import or transplant.  Frequently sanitize tools as well.  Inspect your garden daily if possible, even the veggies.  If foliage is turning yellow or dying, check the base of the plant for spores.  Sclerotium rolfsii strikes fast, so finding it early is key.  Throw infected plant material away, do not compost it.  Do not mulch up against plants; leave an air space around them.  Monitor plants around newly disturbed soil as spores can live indefinitely underneath, waiting to be exposed.  It is the spores that are in the top few inches of soil that cause the damage.

For more information on Sclerotium rolfsii ...
http://www.hostalibrary.org/articles/SBarticle.htm (Important information regarding its lifecycle.)
http://www.apsnet.org/edcenter/intropp/lessons/fungi/Basidiomycetes/Pages/SouthernBlight.aspx
http://www.extension.iastate.edu/Publications/SUL8.pdf
http://www.cbwinfo.com/Biological/PlantPath/SR.html
http://www.sweetbeet.com/growernet/Resources/pests/diseases/sclerotium.htm

UPDATE:  I hoped that an exceptionally cold winter had killed any potentially remaining spores, but on June 15, 2014 I found a few on one Hosta.  I had about half a quart of last year's mixture in the garage, so after carefully disposing of the affected leaves, I shook it up and poured it straight on the area.  I carefully inspect daily, and despite perfect conditions for Sclerotium rolfsii, I have not found any more.