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Edition 8.34 The Interactive Garden Gazette August 21, 2008
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Indian Summer

When I was a kid, the arrival of Indian summer was the last summer hurrah! It was still light enough to play outside after dinner, and warm enough to wear shorts. Even though school had begun, you still had a couple of weeks of warm summertime fun. Well, now I realize that it was also a couple more weeks of summertime flower color for my parents to enjoy in their gardens! Somehow, I think they must have planned ahead to ensure that the gardens were beautiful.

That's right. Now is the time to tuck into your garden beds and patio paradise containers some of your favorite late summer and fall blooming perennials and shrubs. You may be the type of gardener who has a complete plan of colors, sizes and shapes in mind. Or you might be a gardener that loves just to collect plants of all colors, sizes and forms. You know who you are and what your style is.

There are plenty of late summer and autumn bloomers to choose from. Check our gallery here for some examples. Our plant selection is a veritable treasure chest of Indian Summer colors. Come into the garden center and begin choosing today. Don't forget to pick up a good soil amendment like Kellogg Amend Garden Soil for Flowers and Vegetables. Oh yes, and to promote those non-stop blooms, feed them regularly with Whitney Farms Rose & Flower Fertilizer.

Then sit back on a lounge chair or hammock--and enjoy your Indian summer garden in full bloom!

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When to Harvest Your Vegetables

One of the most common mistakes made by beginning vegetable gardeners is harvesting the crop at the wrong time. Since ripeness varies according to planting time, the weather in any given year, the variety of the particular vegetable planted, and many other things, one can't just say, "Harvest this vegetable on August 20th." So we've gotten together a general guide for harvesting many commonly-grown vegetables.

We thought of restricting it to vegetables that grow easily here, or to summer harvest only--but greenhouse-growing is becoming more popular so we decided to do the long list.

Asparagus: Begin harvesting when spears are 6-10 inches tall and before heads open. Snap them off at ground level; new spears will continue to grow. Stop when the average spear diameter is less than 1/4 inch.

Beans (snap): Pick before you can see the seeds bulging. They should snap easily into two. Check daily, as they will get tough quickly.

Beans (lima): Pick when well filled, but not over-mature.

Beets: You can harvest and eat the green tops that you thin out of the rows. Beets are somewhat a matter of preference when it comes to the right size. Most prefer a diameter of 1.5 to 2 inches, but they are ready any time after the shoulders come above the soil line.

Broccoli: We eat the unopened flower buds of broccoli, so check often as weather warms, and get them before they bloom (don't expect your heads to get to supermarket size). Harvest when the buds are about the size of a match head. Remove with a sharp knife; leave between 4 and 6 inches of stem.

Brussels Sprouts: Harvest when they are green, plump and firm (usually an inch or more in diameter). Harvest by twisting off or cutting the sprout from the stem.

Cabbage: Harvest cabbage when the head is firm and has reached adequate size, depending on the variety and growing conditions.

Cantaloupe (muskmelon): The color should change to beige and the fruit will "slip" from the stem easily. You may be able to notice a sweet smell when ripe.

Carrots: Depending on variety, pull when about 3/4 to 1-1/2 inches in diameter. The top of the carrot will show at the soil line; you can gauge when the diameter looks right for your variety. If the diameter looks good, chances are the length is fine too.

Cauliflower: As with broccoli, your cauliflower heads will probably not get to supermarket size. Harvest when the head looks full and while the curds of the head are still smooth.

Chard (Swiss): Harvest as leaves become large enough.

Collards (kale and mustard): Harvest young plants or lower leaves on older plants. Leaves should be young and tender. Taste improves with cool weather.

Corn: Pick after the silks become brown. The kernels should exude a milky substance when pricked.

Cucumber: Check daily and harvest early (if harvesting for pickling, even earlier). Timing and length will vary with variety. The fruits should be firm and smooth. Over-ripe cucumbers can be very bitter or pithy, even before they start to turn yellow.

Eggplant: Slightly immature fruits taste best. The fruits should be firm and shiny. Cut rather than pull from the plant.

Garlic: The garlic tops will fall over and begin to brown when the bulbs are ready. Dig gently, don't pull, and allow to dry before storing. Shake off dirt rather than washing.

Kohlrabi: For the best texture, harvest once the kohlrabi "bulb" is between two and three inches in diameter. Too much larger than that and it will be tough and woody.

Leeks: Harvest leeks when they are about 1 inch in diameter.

Lettuce (Head): Harvest once the head feels full and firm with a gentle squeeze. Hot weather will cause it to bolt or go to seed rather than filling out.

Lettuce (Leaf): Harvest the outer leaves once the plant has reached about 4 inches in height. Allow the younger, inner leaves to grow. Leaf lettuce can be harvested in this fashion for quite some time. If seed stalks begin to form, harvest the whole plant immediately and refrigerate.

Okra: Harvest frequently; figure about 3-4 days from flower to mature pod. Err on on the immature side--the pods get woody and tough as they get older. Remove old pods, even if you missed one too long, so they'll keep producing. Wear gloves and long sleeves when harvesting; okra has small spines (they look like hairs) that can make you itchy--even 'spineless' varieties have some.

Onions: Onions can be dug once at least half the tops have ripened and fallen over. Allow the onions to dry in the sun.

Onions (bunching): Dig before bulbing starts or before they become too thick (over 1/2 inch diameter).

Peas (English): The pea pods should look and feel full. Peas are sweeter if harvested before fully plumped. Peas really need to be tasted (raw) to determine if they are sweet enough.

Peas (edible pod): Harvest when the pods are fully developed, but before seeds are more than half size. (You'll need to develop a feel for this one.)

Peppers (bell, sweet): Fruit should be full size but still green, firm and crisp in texture. If red fruits are desired, leave on plant until red color develops.

Peppers (chile): Fresh fruit should be full size, shiny green to slightly red, firm and crisp in texture. Dry red fruit should be allowed to turn completely red and dry on plant.

Potatoes (Irish): "New" potatoes can be harvested when the tops start to flower. Carefully dig at the outer edges of the row. For full size potatoes, wait until the tops of the potato plants dry and turn brown. Start digging from the outside perimeter and move in cautiously to avoid slicing into potatoes.

Potatoes (sweet): before freezing weather. Cure under warm conditions (80°-85° F) for a week.

Pumpkins: Once the pumpkins have turned the expected color and the vines are starting to decline, they can be cut from their vines.

Radishes: Radishes mature quickly. Harvest as soon as they reach edible size. They will go quickly to seed.

Rhubarb: Delay harvest until second year after establishment. Established plantings (3 years) can be harvested for about 8 weeks. Harvest the largest stalks by grasping each stalk near the base and pulling slightly in one direction.

Rutabagas: The bulbs should be about 3 inches in diameter. Rutabagas can be mulched, left in the ground and dug up as needed. Cold weather improves their flavor.

Spinach: Spinach goes to seed quickly. Harvest by cutting at the soil line before you see a flower stalk beginning to shoot up. Or cut just below the crown for a one-time harvest.

Squash (Summer): Pick young and check often. The skins should be tender enough to poke your fingernail through.

Squash (Winter): Color is a good indicator of winter squash maturity. When the squash turns the color it is supposed to be, cut from the vine.

Tomatoes: For the best taste, harvest tomatoes when they are fully colored and slightly soft to the touch. Gently twist and pull from the vine. If your plant looks like it may be over-producing, you can also harvest some as they start to ripen and let them finish indoors. If you like fried green tomatoes, harvest as they reach full size (or just as the first color change begins, if you like them a bit less tart).

Turnips: The turnip shoulders should be about 1.5 to 3 inches in diameter at the soil line, when ready. Overripe turnips become woody.

Watermelons: The white spot on the bottom of the melon should change to yellow when ripe. Some people can hear a change in the sound made when the melon is thumped with a finger.


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If you hate mosquitoes, you are not alone! In fact, window screens, introduced in the 1880's, were called "the most humane contribution the 19th century made to the preservation of sanity and good temper."

The pesky little insect has ruined countless hikes, BBQ's and campouts. This vector has literally killed millions of people throughout history, and still affects millions around the world today. As daunting as this sounds, there are steps you can take to co-exist and stay healthy.

What attracts the mosquito? After 30 million years of evolution, the mosquito has perfected its hunting skills. The mosquito uses three sensors to attract its prey:


  • Chemical sensors: Mosquitoes sense carbon dioxide and lactic acid up to 100 feet away. Unfortunately, we give off these gases as part of our normal breathing.
  • Visual sensors: Clothing that contrasts with the background enables the mosquito to "zero in" on you.
  • Heat sensors: Mosquitoes detect heat, so they can find warm-blooded mammals very easily.

Article PictureThe best thing you can do to control mosquitoes is to use a mosquito repellant with DEET such as Cutter Insect Repellant and eliminate standing water around your home. A mosquito can lay up to 250 eggs at one time in still water, and they can hatch as fast as 7 days. Check your gutters frequently for collected water (especially if they sag and aren't level), along with birdbaths, buckets or boggy areas of the garden.

Burning citronella candles, using an electronic bug zapper, or spraying surfaces near entertainment areas with a mosquito barrier spray like Green Light Spinosad will also help kill, or at least repel, mosquitoes. We also highly recommend using Mosquito Dunks if you have areas of standing water that you can't drain.

Diligence is your best protection. Stay indoors at dawn and dusk hours, wear pants and long-sleeved shirts if possible, avoid any standing water, and repair broken screens.

Although it can be a constant battle, by incorporating the use of insect repellents and breeding prevention (eliminating standing water), mosquitoes and the diseases they carry can be reduced, making the outdoors more accessible and enjoyable for everyone.

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Are you considering a new landscape for next year? If you're tired of your old garden look or have a brand new yard that needs landscaping, consider our team for all of your design and installation needs.

Green Arrow Nursery Consultants are experts in landscape design. We know which plants grow well in our area, and our design team is knowledgeable in all of the latest plant introductions and landscape techniques.

We work with you to design and create a look that is unique for you and truly reflects your needs and desires. But many people make the mistake of contacting us in late spring when we are already booked up for most of the year. It takes time to design a landscape plan for your home, so we invite you to plan ahead and let us design your landscape plan now so we can add you to our work schedule.

Give us a call today at (818)894-8306. We're here to make sure all of your garden dreams come true!

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Grasshoppers are among the most difficult insect pests to manage in the garden. When numbers are low, they can be hand-picked and squashed. Floating row covers and other protective covers provide some protection if their numbers are not high. However, grasshoppers will eat through cloth or plastic row covers if they are hungry enough.

Most grasshoppers are general feeders, but they prefer young, green plants, especially lettuce, beans, corn, carrots, onions, and some annual flowers. Grasshoppers do their damage by chewing and can remove large sections of leaves and flowers in one sitting, sometimes devouring an entire plant. An odd grasshopper here and there is nothing to be alarmed about, but should you face a full invasion, there are some steps you can take to combat this destructive pest.

The best way to control grasshoppers is to apply a bait containing carbaryl around the borders of your garden. Make sure to re-apply baits after any period of rain. For non-edible plants, you can also use a spray directly on the plants. It usually helps to do a repeat spray every couple of weeks until they leave your garden. Make sure to spray late in the evening or early morning when bee activity is lower; you don't want to kill our important pollinators.

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Garden Pathways

Are you planning on putting a stone path in your lawn or garden? If so, you've got a great opportunity for some great garden design. Don't just plunk those stones atop your sod! There are many low-growing perennial plants that are just great between stones in a path, and will add more personality to your garden than mere grass.

To help you select the best ground cover, consider:

  • The amount of sunlight reaching your path (full sun, partial shade, full shade), because different plants thrive under different conditions.
  • The amount of traffic the plants will need to endure. Light traffic means the plants will be stepped on once or twice a week. Moderate traffic is once a day. And heavy traffic is similar to walking on your lawn several times a day.
  • The type of soil (poor or rich) and moisture conditions (wet or dry).
  • Appearance: plant height, texture and color. If the path is heavily traveled, or people will be running on it, keep the plant height low, or use a plant that bends easily (you don't want people tripping over the plants).

Improve the growing conditions when you carve out the soil for your new stone path. It's difficult to grow anything in a trampled area. The soil gets so compacted that roots cannot deliver water and nutrients to the plant. Add good drainage as well as a layer of topsoil at least 1 in. deep around the stones so your ground cover can thrive.

Finally, help your new ground cover prosper with a weekly soaking (the plants need to stay moist) and a weekly hand weeding. And if you'd like to keep the plants short between the stones, consider plants that tolerate mowing, such as thyme and ajuga.

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What's Bugging You?  Grubs

White grubs are damaging pests that begin invading lawns in early spring and again in summer. Grubs do their damage below ground, so the problem often goes undetected until too late. Beetle grubs can turn a fine looking lawn into a patchwork quilt of yellow spots. In addition, birds and other animals will often start digging up your lawn looking for the tasty grubs to feed on.

The grubs are actually larvae of beetles and other insects; most are C-shaped and off-white with a dark head.

There are several types of grubs that are capable of damaging lawns, with two life cycles in a year. When you have grubs, the damaged areas of grass can be easily lifted and many times the grubs can be seen feeding on the edge of the healthy grass in the damaged area.

Natural controls include beneficial nematodes or milky spore (a disease that specifically attacks Japanese beetle grubs), although it takes a number of applications for milky spore to become established in lawns. It's an excellent long-term solution, but doesn't help much right now.

There are chemical products that are very effective for a grub problem, but only at certain times of year. We recommend Bayer Advanced Grub Control for this time of year.

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Let's face it, working in your garden or watering your lawn is not easy while yellow jackets are buzzing around you. The yellowjacket could be searching for food or trying to protect the nest it carefully constructed during the past season.

Although wasps are helpful in pollination, and some varieties actually feed on insects such as caterpillars and other crop-destroying bugs, their venom can be harmful to those who are allergic to stings.

There are several ways to protect your garden visitors from the yellow jacket. The most natural way is by prevention. Wasps are attracted to food sources by smell, so eliminating any type of food such as soda or protein will keep these critters away. Do not squish a wasp, as the bug releases a pheromone that attracts others of its kind. Even worse, if you swat at the yellowjacket and miss, it will only defend itself by trying to sting you.

The easiest way to remove yellow jackets from your garden is by using a trap. The yellow jackets will enter the trap and get stuck. When using a trap, be sure to empty it weekly. We suggest placing a few strategically in different parts of the garden (away from entertaining areas) for best results. You can also spray the nest, if it is not near any vegetables or herbs. Note that spraying does put you in danger of being stung.


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CRAPE MYRTLES...Lagerstroemia sp.

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No doubt you're seeing these riotous shrubs and small trees in bloom right now! Sunny and hot will continue to be the forecast over the next couple months.

Some plants (and people!) grow weary and stressed when high temperatures persist day after day. Crape myrtles, on the other hand, thrive under these conditions, making them valuable flowering shrubs or small trees in the landscape. Whether trained as standard or multi-trunk trees, Crape myrtles make beautiful specimen or accent plants. Showy crinkled flowers are abundant throughout summer, with colors ranging from the reds to pinks, purples, and white. These gorgeous shrubs are wonderful in any sunny spot where summer color is needed.

For desired size and shape, prune in early spring. Don't worry too much about your pruning skills, as crape myrtles bloom on new wood. However, it is important to deadhead as blossoms fade in order to encourage continuous bloom. Crape myrtles are long-lived, drought tolerant and relatively pest free, although sometimes aphids and powdery mildew can be a problem. The handsome bark and fall leaf color just add to an already stunning plant!

Enjoy the show!

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Who's your bud? Not the budworm. When the weather warms up, you can bet this pest is on its way. The budworm (a type of caterpillar/moth) is gunning for your geraniums, petunias, snapdragons, and other flowering plants. Knowing the budworm's diet, habits, and the effective control methods, you will be armed and ready for combat.

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It can be hard to spot budworms. They are very small and they tend to take on the color of the bloom or foliage they are infesting, further enhancing their camouflage. You will see irregular chewing on the blossoms and round holes through flower buds and leaves. The numerous black droppings they leave behind are one of the telltale signs. Many gardeners may not know they have a problem until the damage becomes severe.

Controlling this pest depends on the amount of planting. With a small patio of plants, physically removing and killing them should be effective. A larger yard would require spraying. Insecticides that contain Bt (Bacillus thuringiensis), such as Safer BT Caterpillar Control, offer reasonably effective biological control. Because the Bt must be ingested by the insect to be effective, it may take a few days before you no longer see any signs of budworms. Plant sprays containing Sevin are also effective in controlling budworms.

Now that you know what to look for, and what to spray, you'll be armed and ready at the first sign of attack.



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"In joy or sadness, flowers are our constant friends."
~Kozuko Okakura


Lime Garlic Grilled Shrimp

Ingredients:

  • 4 limes
  • 3 garlic cloves, minced
  • 1/4 cup extra-virgin olive oil
  • Salt and freshly ground pepper
  • 1 1/2 pounds (about 40) large shrimp, peeled and deveined (tails left on)
  • 1/4 cup basil leaves, cut into thin ribbons

Directions:

  • Using a zester or vegetable peeler, zest 3 limes (about 1 tablespoon); place in a glass dish large enough to hold shrimp.
  • Juice same limes (about 1/2 cup juice), then pour into dish.
  • Add garlic, olive oil, salt and pepper to taste, and shrimp.
  • Toss gently and refrigerate, 30 to 45 minutes.
  • Remove from refrigerator 15 minutes before grilling is to start.
  • Thread metal skewers with 4 to 5 shrimp each.

  • Meanwhile, light grill or heat a grill pan over a medium-high flame.
  • When coals are medium-hot or grill pan is heated, set marinated shrimp on a paper towel-lined plate. (Paper towels will absorb excess marinade and prevent grill from smoking.)
  • Then place shrimp on grill; sprinkle with additional salt and pepper, if desired.
  • Grill shrimp 2 to 3 minutes on each side, just until curled and pink in color. Remove from grill and slide off skewers.
  • Sprinkle shrimp with basil.
  • Cut remaining lime into 4 wedges and serve with shrimp.

Yield: 4 servings

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