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Five fall gardening annoyances

Don’t fret: It’s cooler, so things actually aren’t too bad

Damage vegetable plant
Most of the damage to this plant at the Fair Oaks Horticulture Center was caused by birds, says master gardener Gail Pothour. The leaves are eaten along the edges. (Photos: Kathy Morrison)

The oranges are splitting again. The new lettuce disappeared overnight. The carrots still aren’t sprouting. Help! Who decided that fall was an easy time to garden?

Take a deep breath. Notice the air — it’s cooler in the morning, isn’t it? Even the afternoons are better. Little spikes into the low 90s are much easier to handle than, oh, 112 degrees. Right? OK, then. Relax.

But fall does have its challenges. Here are five, and how to deal with them (or at least explain them):

Damaged leaf
Same plant as above, but a different leaf and likely different pest for most
of the damage: Caterpillars sit on the ribs and eat the leaf centers.

1. Holes in leaves of new sprouts or transplants.  Leafy cool-weather plants, like broccoli and bok choi  and kale, are prime targets for a couple of pests, says master gardener Gail Pothour, longtime vegetable guru for the Fair Oaks Horticulture Center. These include cabbageworms, which are smooth, velvety green caterpillars that turn into pretty little white butterflies. Cabbage loopers are a different caterpillar but another fall vegetable pest; they are green and yellow, and move like inchworms because they have no middle legs.

Caterpillar pests crawl along the ribs of the leaves and take chunks out of the middle. At worst, they crawl down inside the heads of the developing vegetables where they can't be reached. So catch them early, if you have an outbreak. Row covers will keep the butterflies from laying eggs on the plants. Bt, short for bacillus thuringiensis, is an excellent bacteria-based caterpillar fighter.

2. Disappearing sprouts or transplants. If you see damage along the edges of the vegetable leaves, suspect birds, Pothour says. Young, fresh plants look good to them, too. Birds will sit on the soil next to the plant to feast, and can eat it down to the ground if it's young. To keep birds off the young plants, try row covers, mesh baskets or the like. Just be sure to anchor those covers so the birds can't get underneath.

3. Sprouts not appearing at all. Did you plant carrots? For such a common vegetable, they take a long time to germinate. Weeks, in fact. Be patient. Then when they do sprout and get to be about 2 inches tall, don't forget to thin them. They need space to grow. And if you're planting beets or chard, rinse the seeds first, Pothour advises. This removes a chemical on the seeds that inhibits germination. Incidentally, the master gardeners have published a great guide to growing beets .

4. Oranges splitting. This has become more of a Northern California problem in October just the past few years. It's not a disease. Basically, spikes in warm weather and lack of irrigation together signal the tree to suck some moisture out of the fruit. The fruit wall weakens. Then when the tree gets more moisture from rain or irrigation, it sends it back, bursting the weakened fruit. I wrote a full blog post on this problem last year. I've lost only two oranges to splitting so far this year, thank goodness.

5. Perennials looking ragged. Perennials tend to be leggy in late summer, and can be pruned or cut down now, especially if you see new sprouts forming at the base of the plant. Even if you don't see any, it's a good time to clean them up. Perennial herbs can use a good fall haircut, too.






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Garden checklist for week of April 19

After this midweek storm, start getting serious about spring gardening. Flowers are blooming about three weeks ahead of schedule. That includes weeds!

* Get ready to swing into action in the vegetable garden – if you haven’t already. As nights warm up over 50 degrees, set out tomato, pepper and eggplant transplants.

* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons,  radishes and squash; wait on pumpkins until May. Plant onion sets.

* In the flower garden, plant seeds for asters, cosmos, celosia, marigolds, salvia, sunflowers and zinnias. Transplant petunias, zinnias, geraniums and other summer bloomers.

* Plant perennials and dahlia tubers for summer bloom. Late April is about the last chance to plant summer bulbs, such as gladiolus and tuberous begonias.

* Transplant lettuce and cabbage seedlings.

* April is the last chance to plant citrus trees such as dwarf orange, lemon and kumquat. These trees also look good in landscaping and provide fresh fruit in winter.

* Smell orange blossoms? Give citrus trees a low dose of balanced fertilizer (such as 10-10-10) during bloom to help set fruit. Keep an eye out for ants. If leaves look yellow, your tree may need an iron boost -- apply some chelated iron fertilizer.

* Apply slow-release fertilizer to the lawn.

* Thoroughly clean debris from the bottom of outdoor ponds or fountains.

* Spring brings a flush of rapid growth, and that means your garden needs nutrition. Give shrubs and trees a slow-release fertilizer. Mulch with a 1-inch layer of compost, which helps the soil, but keep it a few inches away from trunks and stems.

* Azaleas and camellias looking a little yellow? If leaves are turning yellow between the veins, give them a boost with chelated iron.

* Trim dead flowers but not leaves from spring-flowering bulbs such as daffodils and tulips. Those leaves gather energy to create next year's flowers. Also, give the bulbs a fertilizer boost after bloom.

* Pinch chrysanthemums back to 12 inches for fall flowers. Cut old stems to the ground.

* Mulch around plants to conserve moisture and control weeds.

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Food in My Back Yard (FIMBY) Series

Lessons learned during a year of edible gardening

WINTER

Is edible gardening possible indoors?

Hints for choosing tomato seeds

Starting in seed starting

Why winter is the perfect time to plant fruit trees

When to plant? Consider staggering your transplants

How to squeeze more food into less space

Potatoes from the garden

Plant a fruit tree now -- for later

Win the weed war by tackling them in winter

Tips for planting bare-root trees, shrubs and vegetables

Time to give vegetable seedlings some more space

Ways to win the fight against weeds

FALL

Dec. 16: Add asparagus to your edible garden

Dec. 9: Soggy soil and what to do about it

Dec. 2: Plant artichokes now; enjoy for years to come

Nov. 25: It's late November, and your peach tree needs spraying

Nov. 18: What to do with all those fallen leaves?

Nov. 11: Prepare now for colder weather in the edible garden

Nov. 4: Plant a pea patch for you and your garden

Oct. 27: As citrus season begins, advice for backyard growers

Oct. 20: Change is in the autumn air 

Oct. 13: We don't talk (enough) about beets

Oct. 6: Fava beans do double duty

Sept. 30: Seeds or transplants for cool-season veggies?

Sept. 23: How to prolong the fall tomato harvest 

SUMMER

Sept. 16: Time to shut it down? 

Sept. 9: How to get the most out of your pumpkin patch

Sept. 2: Summer-to-fall transition time for evaluation, planning

Aug. 26: To pick or not to pick those tomatoes?

Aug. 19: Put worms to work for you

Aug. 12: Grow food while saving water

Aug. 5: Enhance your food with edible flowers

July 29: Why won't my tomatoes turn red?

July 22: A squash plant has mosaic virus, and it's not pretty

July 15: Does this plant need water?

July 8: Tear out that sad plant or baby it? Midsummer decisions

July 1: How to grow summer salad greens

June 24:  Weird stuff that's perfectly normal

SPRING

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