I had the pleasure of listening to a seminar given by Dr. Hafiz Maherali, Director of the University of Guelph Phytotron, about the latest mycorrhizal fungi (mycorrhizae) news. This post summarizes some of this fascinating new information about this important group of organisms that every gardener should understand.
Is fall a good time to plant perennials and trees? Most people plant in spring, but many have suggested that fall might be an even better time to plant. It is cool, the above ground part of the plant is going dormant and so root growth does not have to compete with top growth. A lot of plants are on sale in fall so that is certainly a plus, but is fall planting better than spring planting?
What is better for your seedlings; top watering or bottom watering?
Lots of online sites and social media discussions recommend bottom watering for seedlings – are the claimed benefits real? If rain works in nature, why do we need to bottom water when starting seeds in the house? I am going to sort all this out in this blog.
We all know cedar chests repel moths and cedar shavings are routinely used in homes to control insect pests. Based on this, gardeners have concluded that cedar mulch will repel insects in the garden and will negatively impact pollinators trying to get to flowers. For these reasons they recommend you should not use cedar mulch.
Is there any science to support these claims? Does it harm bees? Does it affect ants and termites?
Should you stop using cedar mulch?
Common advice is that tree roots grow in spring and fall and take a rest in summer. The tree is too busy in summer taking care of leaves, flowers and fruit to do much root growth. Roots also grow better in cool weather. Perennials also take a rest in cold winters, but do the roots grow in summer? This certainly seems to make a lot of sense, but is it really true?
There are two common ways to water houseplants – from the top and from the bottom. The debate about which one is best has been raging for many years and it’s time to put a stop to the debate and decide once and for all, which is best – top watering or bottom watering?
Is sugar water good for plants? This is a very interesting question and one that leads to all kinds of fun facts about plants.
Even more interesting is how this myth plays out on the internet. In most cases, popular gardening sites promote the myth, but in this case they tell you NOT to use sugar water for plants, except in special cases. They then give a variety of reasons why sugar water is bad for plants, but these explanations are mostly wrong. They are creating new myths with their explanations!
Many of these writers ignore basic plant biology or are unaware of the correct facts. I’m going to try and sort this thing out for you.
What is the difference between straw and hay? I am always surprised at all of the misinformation that is spread whenever discussions start about using straw or hay in the garden. Which one has more weeds? Do they improve soil? Are lingering herbicides a problem? Should either be used in the garden?
The answers to these questions are quite simple if you first eliminate the myths and that is what I’m going to do in this post.
Turfgrass is losing its status as the golden child of groundcovers as gardeners look towards greener pastures. Clover has been getting a lot of buzz as a low-maintenance and eco-friendly lawn alternative or additive. Keep reading to find out what to expect from clover as a lawn alternative and how to add the right clover to your lawn.
I started gardening a long time ago and at that time tilling was standard practice. Most gardeners did not have a tiller so they did it by hand with a shovel. In some circles the idea of not tilling started to make waves. My first introduction was Ruth Stout’s no-till garden. Just cover everything with straw. Better for the soil and a whole lot less work. No-till became more popular in agriculture in the mid 1990 but few gardeners followed suit. Even today, many gardeners have never heard of the technique and continue the practice of spring tilling.
No-till is claimed to be better for soil and the environment since it releases less carbon dioxide into the air.
I have been promoting this idea in gardening circles for 15 years or more and slowly the idea is catching on with gardeners, but it might be time to take a step back and have a close look at the claimed benefits of no-till because science now has a lot more data on this.
In years gone by it was common to clean up the garden in fall. It does result in a neat clean looking garden, but then we learned that all kinds of beneficial insects overwinter in that messy looking stuff on the ground, so we started to do cleanup in spring instead. To understand why, read this; Spring Cleanup Advice – Do it Right .
Now things have changed again. We are being told not to cleanup until temperatures are consistently above 10 C (50 F) to allow insects time to leave their winter protection. If you look at the recently circulated meme below, you have to wonder if this recommendation is valid. Does it really have to be 10 C? I see all kinds of insects when there is still snow on the ground. And what does “consistently ” mean? Is that nighttime or daytime temperature? Is it a daily high or low? How much harm will you do if it is only 9 C (48 F)? Is there any real science that supports this idea? Let’s find out.
Gardeners have been making and using compost for hundreds of years and we talk a lot about “finished compost”, but what is it? When is compost really finished?
You can make so-called finished compost using a hot compost pile in a few months, but compost continues to decompose for many years. If it is not fully composted when it comes out of the compost pile is it really finished?
When I first asked this question I thought is was a simple one with a simple answer, but even science struggles to define finished compost.
