IPM: Cultural Control

caterpillar-and-leaf-damage_blkforest_20090729_lah_7823The best way to ward off insect and disease problems is to grow a healthy plant. Just as a wolf pack will target the weakest member of a herd, insects seem to zero in on a plant that is under stress. Good gardening practices—choosing the right plant for the spot, soil preparation, proper planting, feeding, watering, mulching, and the like, all go a long way to keep our gardens free of damaging pests.

But cultural control goes further than just having a green thumb. Sometimes our yards are invaded by insects no matter how good a gardener we are. In that case, it pays to know the enemy.

(more…)

After the Storm

[This article, by Joan Nusbaum and I, originally appeared in the Colorado Springs Gazette in 2005. I have edited it to make it even more applicable after last week’s storms!]

m5auwe-golfballhail67-c-gazetteLast week, our part of the world was hit by a horrific hail storm. Drifts (if you can call them that) measured four feet high. Houses, cars, and, of course, gardens were ruined by hailstones the size of golf balls (as this photo by Pam Woodward proves). It’s quite shocking to watch from your window and see thousands of hail stones plummeting your favorite garden. Do not despair—the plants may recover! Hail usually does not damage the root system. Here are some things you might do to help your plants survive and even thrive:

(more…)

Eggplant Sex

solanum-melongena-gretel_eggplant_dbg_lah_7076

Girl eggplants? Boy eggplants? Does one taste better than the other? And what does all this have to do with plant sex?

In researching  my recent post on eggplant, I discovered a bunch of discussion about “male” vs. “female” eggplants. We’re talking about the fruit—the eggplants that we eat—not the individual plants on which the eggplants grew.

From a botanical point of view, this whole debate is nonsense. Let me explain:

(more…)

My Favorite Eggplants

eggplant_dbg-co_lah_9256Eggplant Parmigiana, Moussaka, Moroccan Eggplant Salad, Baba Ganoush… there are plenty of delicious ways to eat eggplant. Growing it in Colorado is a whole different story. A native of warm and humid southeast Asia, it takes a bit of persuasion to convince this tomato family member to thrive in our cool, dry climate.

As Colorado gardeners, we have all sorts of tricks to modify the microclimate around our plants and extend a too-short growing season. Cloches, cold frames, copious use of plastic and accessories such as Wall ‘ O Water are all helpful. However, choosing the right varieties can mean the difference between crop failure and Ratatouille. (For more on how to grow eggplant, see the CSU Fact Sheet on “Peppers and Eggplants.”)

(more…)

IPM: Resistant Varieties

dbg_lah_6794Is your garden being bugged? While 95% of all insects are either beneficial or benign, that last 5% can eat us out of house and home—or at least out of cabbage and broccoli. If insect invaders are on the attack, sometimes you just have to fight back.

Pests may be persistent, but we gardeners are not helpless. I like to remind myself that I am smarter than an aphid and more cunning than a flea beetle. When it comes down to a battle for the harvest, there are lots of tools at our disposal. As a master gardener, I was taught the principles of Integrated Pest Management, or IPM. Rather than just reaching for a spray can, this approach is multifaceted. There are many ways to outwit a weevil.

(more…)

My Favorite Varieties: Tomatoes

tomatoes-greenhouse-2008sept08-lah-296When it comes to the perfect tomato, we gardeners have sky-high expectations! We all have our own concept of tomato heaven—healthy plants bearing tons of huge fruit with exactly the right sugar-to-acid balance, thin skin (but one that doesn’t crack), early, full of flavor, and resistant to whatever Mother Nature can throw at it.

Here in my high altitude garden, I can’t afford to be so picky. Forget long-season heirlooms and humongous beefsteaks. I just want a tomato that will ripen before it freezes to death! It does, however, have to taste better than store-bought. Isn’t flavor the whole reason to grow tomatoes in the first place?

(more…)

Having a Row to Hoe

veggie-rows-dianapicchietti-monument-22july05-lah-025rEarth Day is this weekend, and what could be a more appropriate celebration than starting a vegetable garden. And for those of us in the Pikes Peak area, it’s finally time to get some dirt under our fingernails.

If this is your first year growing veggies, the first order of business is finding a promising spot for the garden. I talked about this in a previous post. Next, you need to decide how big to make the garden. This involves not only your desired yield, but also how you lay out the garden. Will you have traditional rows, wide rows (pictured here), beds (raised or otherwise) or a combination of these? Today I’m going to talk about rows… next Thursday I’ll cover beds.

(more…)

My Favorite Varieties: Asian Greens

Most veggie gardeners grow lettuce, spinach, and perhaps chard, kale or collard greens. Some are familiar with bok choy (spelled a dozen different ways). It’s the adventurous gardeners, or those from overseas, who include veggies such as Mizuna, Salt Wort, Fun Jen, or  Yu Choi Sum.

Since we used to live in Cupertino, California, where my local grocery store was Tin Tin #2, and the closest restaurant served the most incredible mu shu pork and lettuce wrapped chicken, it was only natural that I included some Asian imports in my garden as well.

I admit to having western taste buds, so what I recommend might seem all wrong to someone used to more exotic flavors. However, I like what I like. Maybe you will too.

(more…)

My Favorite Lettuce Varieties: Butterhead

lettuce-butterhead-blkforestco-5junt07-lah-006Butterhead (aka bibb) lettuce, with its smooth, soft leaves and loose heads, is by far my favorite kind. It’s also rather pricey in the stores. I probably plant twice as much butterhead as I do all the other varieties combined.

I’ve been hunting for a butterhead that is big, holds for several weeks at maturity, resists tipburn (a problem with our hot, dry, windy weather), and is tender and flavorful—a pretty tall order. I finally came up with a winner, but let me first tell you about the also-rans.

(more…)