Sunflowers can be planted in late summer for autumn blooms
'Autumn Beauty' sunflowers are often multicolored in shades of bright yellow, dark gold and rich bronze. Kathy Morrison
Sunflowers aren’t just for summer in Sacramento. In fact, this sunny annual can produce two crops: One planted in late winter or early spring for June flowers and July seeds, plus a second round planted in late summer or early fall for late fall or winter harvest. Quick-maturing varieties can be planted as late as October in Sacramento to produce blooms by New Year’s Day. (Their only limitation: They can’t take hard frost.)
See for yourself with free sunflower seeds offered by Sacramento Digs Gardening. The SDG seeds are part of the goody bags available free (while supply lasts) to anyone who turns out for Saturday’s Harvest Day at the Fair Oaks Horticulture Center in Fair Oaks Park. Gates open at 8 a.m. (There will be lots of other great stuff in those bags, too.)
We Sacramentans love sunflowers, probably because sunflowers love Sacramento and the Central Valley. Yolo County produces much of the nation’s hybrid sunflower seed – not to eat, but to grow (often just for their flowers).
When planted in late summer, sunflower seeds sprout rapidly in warm soil. Plant seeds about 1 inch deep and keep evenly moist; the better the soil, the faster they’ll grow.
Most sunflowers mature in under 100 days; that’s not the time to produce flowers, but to form dried seed. A seed-packed sunflower head is ready to cut when the back of the flower head turns yellow to brown, the petals shrivel and the head droops forward, due to the heavy seeds.
You also can tell they’re ready to pick by the increased bird activity around your sunflowers. To keep the seeds for yourself to eat (or to plant next year), place a large paper grocery bag over the ripe head and secure it with string around the stem. Then, cut the stem and let the flower head dry inside the bag in a cool dark place. The seeds will drop into the bottom of the bag for easy collection.
As a cut flower, sunflowers offer a quick return on any time or effort. Sunflower blooms often appear in 50 to 60 days and branching varieties keep producing more flowers for at least another month, depending on the variety. Planted now, your sunflowers will provide bouquets in time for Halloween.
For our Harvest Day giveaway, we chose ‘Autumn Beauty’ sunflowers, which live up to their name. Growing 4 to 6 feet tall, this branching variety matures in 70 to 80 days with flowers in six to seven weeks. An excellent cut flower with strong stems, the large blooms are often bicolor in shades of bright yellow, dark gold and rich bronze.
Hosted by the Sacramento County master gardeners, Harvest Day is the Sacramento region’s largest free garden education event. Fair Oaks Hort Center is located at 11549 Fair Oaks Blvd., Fair Oaks.
Details: https://sacmg.ucanr.edu/Harvest_Day/.
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Garden Checklist for week of Jan. 12
Once the winds die down, it’s good winter gardening weather with plenty to do:
* Prune, prune, prune. Now is the time to cut back most deciduous trees and shrubs. The exceptions are spring-flowering shrubs such as lilacs.
* Now is the time to prune fruit trees. (The exceptions are apricot and cherry trees, which are susceptible to a fungus that causes dieback. Save them until summer.) Clean up leaves and debris around the trees to prevent the spread of disease.
* Prune roses, even if they’re still trying to bloom. Strip off any remaining leaves, so the bush will be able to put out new growth in early spring.
* Clean up leaves and debris around your newly pruned roses and shrubs. Put down fresh mulch or bark to keep roots cozy.
* After the wind stops, apply horticultural oil to fruit trees to control scale, mites and aphids. Oils need 24 hours of dry weather after application to be effective.
* This is also the time to spray a copper-based fungicide to peach and nectarine trees to fight leaf curl. (The safest effective fungicides available for backyard trees are copper soap -- aka copper octanoate -- or copper ammonium, a fixed copper fungicide. Apply either of these copper products with 1% horticultural oil to increase effectiveness.)
* When forced bulbs sprout, move them to a cool, bright window. Give them a quarter turn each day so the stems will grow straight.
* Browse through seed catalogs and start making plans for spring and summer.
* Divide daylilies, Shasta daisies and other perennials.
* Cut back and divide chrysanthemums.
* Plant bare-root roses, trees and shrubs.
* Transplant pansies, violas, calendulas, English daisies, snapdragons and fairy primroses.
* In the vegetable garden, plant fava beans, head lettuce, mustard, onion sets, radicchio and radishes.
* Plant bare-root asparagus and root divisions of rhubarb.
* In the bulb department, plant callas, anemones, ranunculus and gladioli for bloom from late spring into summer.
* Plant blooming azaleas, camellias and rhododendrons. If you’re shopping for these beautiful landscape plants, you can now find them in full flower at local nurseries.