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Spring Gardening Tips for a Flourishing Garden
As the vibrant colors of spring burst forth and the air fills with the sweet scent of blossoms, it's the perfect time to roll up your sleeves and tend to your garden. Whether you're a seasoned gar...
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Poor blackberry pollination can be traced to spring weather
This berry season, the bees let me down. My usually dependable blackberry plants bore precious few berries. The ones that did develop turned out misshapen. Instead of clusters of berries, the canes were covered with dried-up brown stubs.
I had lots of flowers – beautiful white blooms that usually attract bees with no problem. My blackberries grow near a big bed of roses; bringing pollinators into my backyard has never been a problem.
But this spring was different. In particular, my Babycakes dwarf blackberries fell victim to rollercoaster temperatures. Early April warmth (including 92 degrees on April 8) brought out the first berry blooms. But that was followed by a sudden plunge back into the 50s and frost on April 12. That sudden, unseasonable frost may have snuffed out pollinated blooms.
Once the flowers open, their stamens and pollen stay viable for only a short period (usually three days); they need bees when they need them. Honeybees don’t like wildly fluctuating temperatures. They don’t come out when it’s too cold or too hot, and it was both while those berries needed their help.
So the little pollination that did happen was extremely spotty; my guess, it was self-fertilization, not bees.
Adding to the berry dilemma were heat and drought, especially in June as berries were ripening.
Sacramento set a record for most 100-plus days in June; 11 days hit triple digits including a streak of eight straight. Three June days reached 104. That put heat stress on plants as berries were developing.
Vines already were thirsty. The last six months have been almost bone-dry, and even those notoriously vigorous blackberry roots were subject to dieback. Unless plants got supplemental irrigation, the vines tended to brown and often aborted berry production. (My Babycakes plant has the added challenge of growing in a large pot.)
And it’s not just my poor Babycakes that’s suffering. I’ve seen a similar lack of pollination and vine dieback in blackberries in our local greenbelt.
Fortunately, my vines are already sprouting healthy green growth. It’s time to cut out the old canes with their brown stubble, and move on. Maybe I can get a fall harvest? We’ll see what the bees are doing in August.
For more on blackberries and other caneberries, here are UC cultivation notes: https://www2.ipm.ucanr.edu/agriculture/caneberries/Growth-and-Development/ Also, here's good information from the Sacramento County master gardeners on growing caneberries in our region: https://ucanr.edu/sites/sacmg/files/74193.pdf
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Garden Checklist for week of May 19
Temperatures will be a bit higher than normal in the afternoons this week. Take care of chores early in the day – then enjoy the afternoon. It’s time to smell the roses.
* Plant, plant, plant! It’s prime planting season in the Sacramento area. If you haven’t already, it’s time to set out those tomato transplants along with peppers and eggplants. Pinch off any flowers on new transplants to make them concentrate on establishing roots instead of setting premature fruit.
* Direct-seed melons, cucumbers, summer squash, corn, radishes, pumpkins and annual herbs such as basil.
* Harvest cabbage, lettuce, peas and green onions.
* In the flower garden, direct-seed sunflowers, cosmos, salvia, zinnias, marigolds, celosia and asters.
* Plant dahlia tubers. Other perennials to set out include verbena, coreopsis, coneflower and astilbe.
* Transplant petunias, marigolds and perennial flowers such as astilbe, columbine, coneflowers, coreopsis, dahlias, rudbeckia and verbena.
* Keep an eye out for slugs, snails, earwigs and aphids that want to dine on tender new growth.
* Feed summer bloomers with a balanced fertilizer.
* For continued bloom, cut off spent flowers on roses as well as other flowering plants.
* Don’t forget to water. Seedlings need moisture. Deep watering will help build strong roots and healthy plants.
* Add mulch to the garden to help keep that precious water from evaporating. Mulch also cuts down on weeds. But don’t let it mound around the stems or trunks of trees or shrubs. Leave about a 6-inch to 1-foot circle to avoid crown rot or other problems.
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