Plant Propagation

by | Dec 18, 2010 | 2 comments


One of my favorite things about plants is the unbelievable abundance in nature. If you know, or if you look closely you see babies everywhere. Seedling maples, sarcocca, digitalis, perennials that can be divided. Flowers that have reseeded in the garden. Pumpkins in your compost and other volunteers. Overgrown iris, huechera’s, sage’s, dianthus, daylilies, agapanthus that just need dividing. Then there’s the whole range of plants that can be easily propagated. Hydrangea, old roses(I don’t recommend cuttings from grafted roses, so much mosaic disease), viburnums, buddleia, willow, lavatera . Other plants can be readily propagated as hard or soft wood cuttings. The best time is October and November here in Northern California, by now in December you can still transplant and divide plants. But cuttings will just languish in cold soils and not start to root until it starts to become warmer and the days longer, that happens here about Valentines day.

What I also love about that is later you remember where and when you took those cuttings. The coral bells from my grandmother’s garden, I’ve had in all my gardens. The roses growing all over the place started from cuttings. I have the rose Le Marque growing right now propagated from Mark Lappe’s yard about fifteen year’s ago. It is a huge rambler growing about 20 feet up his deck. My friend Sherry and I started it for our wholesale rose business, later I planted one in the garden I built at Odiyan. Now I’ve taken a cutting from that rose last year and it’s growing here in my yard. I always remember the rose it came from in Mark’s yard. Next I can offer it to his children for their yards.It’s the memories that makes gardens so special. Also now at a gift giving time a very inexpensive gift.

One of the best books I’ve ever found on propagation is by the Royal Horticultural Society. I have an older version of this but have referred to it for twenty years. Very worthy book for your gardening library.

Greg Lowry at Vintage Gardens, the worlds best rose nursery, recommended taking cuttings from blooming wood. That otherwise the subsequent plants would have less blooming vigor. I usually take a 12″-16″ piece cut from bud to bud. Newer wood seems to more readily root. The idea is to keep these plants alive until they root. They might loose leaves, especially if they are deciduous. I usually try to root soft wood cuttings outside in good garden soil. Right now I have an area in my vegetable beds. Lately I haven’t used rooting hormone, preferring not to use chemicals. My success rate is not as good, but I’m just rooting for myself now, I can always plant more.

One time I visited my neighbor who was a well know plant woman in our area. Building a large ornamental garden at a time when people were still traveling up here in boats. She was 92 at the time and asked me for cutting of a dwarf hydrangea I had. These are very slow growing. I loved that enthusiasm and optimistic approach. I later worked in this garden after her death and the hydrangea is there. Growing slowly.