For the busy gardener, the idea of a flower garden that sows itself is pretty appealing. The idea of a garden that sows itself AND saves you money sounds almost too good to be true. Self-seeding annuals (and some biennials and perennials) are more than up to the task. In fact, they are the perfect flowers for the job. That's because nature has already designed them to be prolific bloomers and mass producers of seed.
The most inexpensive way to start a self-sowing garden is by seed (you can also start with plants and save the seed). There are two ways to do this. The first way (for you adventurous types) is to scatter your seeds willy-nilly all over a prepared bed. This is a wonderful "wait and see what you get" kind of approach, which is sure to garner some delightful, if not surprising, results. This approach also gives you the advantage of not having to weed until you learn to identify your flowers from those less desirable "flowers that are just out of place."
The second way (for you more conservative types), is to outline a bed and mark off different sections within the bed for sowing each type of seeds. This results in a little more formal look (at least for the first year), and will give you a better opportunity to "edit" (but less excuses to leave the weeds). Plants tend to lean forward (and over the edges of your carefully marked bed) before dropping their seed. Bend them back to where you want your seed to fall, or once spring rolls around you'll be transplanting seedlings from over the border.
Once the seedlings are tall enough, start adding a protective layer of mulch around them to cover the soil and help control weeds.
When to Stop Deadheading
Self-sowing annuals have a lot of flower power. Take advantage of this by deadheading them to encourage continuous blooms until mid to late summer. After that, let some of the flowers go to seed.
Getting Seeds to Germinate
Many gardeners choose a more deliberate approach to self-sown gardens by collecting and saving seeds each fall and sowing them directly by hand in the spring. This works well as long as you provide the seeds with the conditions they need to germinate. Some seeds need light to germinate (should not be covered with soil), while others prefer darkness. Many annual seeds will germinate faster if scarified or soaked in water. Others need a period of cold to trigger germination.
A Garden Full of Surprises
One thing to keep in mind when selecting plants and seeds is whether or not they are open-pollinated or hybrids. Open pollinated seeds (like the heirloom varieties) will always produce offspring identical to their parent, which is wonderful if you're going for a certain look or trying to maintain a specific color scheme. Hybrid seeds may produce offspring which look vastly different from their parents. This can be exciting if you like surprises and enjoy seeing a different look each season.
Some Great Self-Sowing Plants
- bachelor's button (Centaurea cyanus)
- bird's eyes (Gila tricolor)
- blue flax (Linum perenne)
- calendula (Calendula officinalis)
- California poppy (Eschscholzia californica)
- columbines (Aquilegia spp.)
- cosmos (Cosmos spp.)
- dame's rocket (Hesperis matronalis)
- evening-scented stock (Matthiola bicornis)
- farewell-to-spring (Clarkia amoena)
- forget-me-nots (Myosotis spp.)
- foxglove (Digitalis purpurea)
- gloriosa daisy (Rudbeckia hirta)
- hollyhock (Alcea rosea)
- Johnny-Jump-Up (Viola tricolor)
- lupines (Lupinus hybrids)
- mountain phlox (Linanthus grandiflorus)
- oriental poppy (Papaver orientale)
- poppies (Papaver spp.)
- purple coneflower (Echinacia pururea)
- rose campion (Lychnis coronaria)
- scarlet flax (Liniun grandiflorum rubrum)
- snapdragon (Antirrhinum majus)
- spider flower (Cleome hassleriana)
- sunflower (Helianthus annuus)
- sweet alyssum (Lobularia maritima)
- sweet William (Dianthus barbatus)
This is just a partial list. Don't forget about plants that are native to your region.
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