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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Food in My Back Yard Series
July 1: How to grow summer salad greens
June 24: Weird stuff that's perfectly normal
June 17: Help pollinators help your garden
June 10: Battling early-season tomato pests
June 3: Make your own compost
May 27: Where are the bees when you need them?
May 20: How to help tomatoes thrive on hot days
May 13: Your plants can tell you more than any calendar can
May 6: Maintain soil moisture with mulch for garden success
April 29: What's (already) wrong with my tomato plants?
April 22: Should you stock up on fertilizer? (Yes!)
April 15: Grow culinary herbs in containers
April 8: When to plant summer vegetables
April 1: Don't be fooled by these garden myths
March 25: Fertilizer tips: How to 'feed' your vegetables for healthy growth
March 18: Time to give vegetable seedlings some more space
March 11: Ways to win the fight against weeds
March 4: Potatoes from the garden
Feb. 25: Plant a fruit tree now -- for later
Feb. 18: How to squeeze more food into less space
Feb. 11: When to plant? Consider staggering your transplants
Feb. 4: Starting in seed starting
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Garden Checklist for week of June 29
We're into our typical summer weather pattern now. Get chores, especially watering, done early in the morning while it's cool.
* It’s not too late to add a splash of color. Plant petunias, snapdragons, zinnias and marigolds.
* From seed, plant corn, pumpkins, radishes, winter squash and sunflowers. Plant Halloween pumpkins now.
* Keep your vegetable garden watered, mulched and weeded. Water before 8 a.m. to reduce the chance of fungal infection and to conserve moisture.
* Water, then fertilize vegetables and blooming annuals, perennials and shrubs to give them a boost. Feeding flowering plants every other week will extend their bloom.
* Don’t let tomato plants wilt or dry out completely. Give tomatoes a deep watering two to three times a week.
* Harvest vegetables promptly to encourage plants to produce more. Squash especially tends to grow rapidly in hot weather. Keep an eye on zucchini.
* Pinch back chrysanthemums for bushy plants and more flowers in September.
* Harvest tomatoes, squash, peppers and eggplant. Prompt picking will help keep plants producing.
* Remove spent flowers from roses, daylilies and other bloomers as they finish flowering.
* Pinch off blooms from basil so the plant will grow more leaves.
* Cut back lavender after flowering to promote a second bloom.
* Give vegetable plants bone meal or other fertilizers high in phosphate to stimulate more blooms and fruiting.