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Sunday, 15 October 2017 11:39

Fall Planting

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If you garden in southeastern Michigan, your garden is drenched. We have had the kind of steady hard rain spanning a good many

days that I call mushroom rain. I see them popping up everywhere. I am not complaining. We have had a very dry summer, and a hot and dry early fall. The cabbage and kale at the shop have needed daily water. My pots at home needed water just about that often. I have worried about the dogwoods that need water in September to set good buds for the following spring, and the evergreens that need to be water loaded and juicy before the ground freezes. I know from my large tree contractor that our ground is dust dry, down deep. The trees he has been digging with a large tree mover have dry rootballs. This has made me very uneasy about what a very cold and windy winter might mean to a plant that has not had sufficient water during the growing season. Few perennials, shrubs or trees are prepared for the winter having gone through the summer and fall bone dry. But for those few plants that rely on dryer winter conditions for survival – though I am sure there are plenty, I am thinking some species of iris, and lavender that do not tolerate wet winter conditions –  most plants like a little stored water and nutrients before they have to face the winter. Perennials whose tops die back to the ground in the fall still have a robust and juicy root system that sustains them through the winter. Deciduous shrubs shed their leaves in the fall-yes.  But their living stems will need to survive all the harsh conditions that a winter has to dish out, and enough stored energy left over to leaf out in the spring.

The dormant/winter season for plants is nothing like my winter sleep. My blankets and a dose of house heat keeps me warm. Nothing about me or around me freezes. A usual night’s sleep is 8 hours or so. A temporary respite. Mammals that hibernate the entire winter season astonish me. They do not come out of hibernation especially ready to face the day. They have lost a lot of weight, and are very hungry and thirsty. Hibernation is not at all like a good night’s sleep. I am reminded of the time a surgeon advised me that I would not be “asleep” for my surgery. I would be unconscious, and all of my normal functions paralyzed. A machine would breathe for me. The surgical team would see to it that my life was sustained. Though I appreciated his candor, I was frightened by this. No plant has a surgical team standing by. Their condition going into the winter will either be enough to sustain them throughout, or not. Our winter is not a big sleep. Dormant means shut down. Strong winter winds and low temperatures take their toll on plants whose only defense against the winter was a kindly summer and fall season. Needless to say, I have been watering like crazy.

I have no idea if the torrential rains we have had the past week will be enough to sustain my shrubs and trees through the winter, but it can’t hurt. I have not dug down to see how deep this rain has penetrated, but I know enough to be happy for every drop we have had.

Our fall is usually cool, and the rain is somewhat regular. It is a perfect time to plant. The weather is mild. The plants are no longer in active growth, so moving them is less stressful. Unlike the spring season, when planting conditions can be less than ideal. The soil is freezing cold even though the ground has thawed. Sopping wet spring soil can be a poor environment for newly planted plants. The act of planting compacts the wet soil, driving out much needed air. The night time temperatures can swing up and down without warning. Spring is a sweet season for established plants, but can be very tough on new plantings. Who in Michigan has not witnessed tulips in full bloom encased in ice, and snow on the ground? So many times, my hope to plant a landscape in late March has had to wait until May. Michigan summers can be brutal. The heat and dry in the summer can be hard on transplanted trees, shrubs and perennials. No matter how much I water, the plants look grief stricken. Fall planting is a recipe for success in my zone. Though the daytime/night time temperatures are cool, the soil is much warmer than it was in the spring. The water from the sky seems like it is packed with vitamins and minerals, doesn’t it?

I am delighted with the prolonged rain. I hope that water has made some inroads on our dry soil. Cool fall temperatures mean that rain does not evaporate very quickly. The effects of our heavy rains will surely persist. I could have never delivered this volume and quality of water from my hose. My container plantings are most certainly coming to the end of their season. But the recent rains have endowed them with some saturated fall color.

A rain drenched garden is a good looking garden. Even these drought tolerant variegated kalanchoes look invigorated by the rain.   I can think of only a very few times when my garden was threatened by excessive rain. In most cases, water distress has more to do with poor drainage than too much rain. Our parched ground may not be restored to a normal moisture content by our recent rains, but every drop of it is appreciated.

Chilly, windy and rainy fall weather-bring it on. We have more to plant.

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Seattle Rockeries creates hardscapes and landscapes using stones, boulders and concrete structures.

Hardscaping creates structures that can be used on slopes and hills to prevent erosion and create water barriers or drainage.