Tag Archives: butternut squash

Searching for a Borer Resistant Squash

October 11, 2022

I have to say that the squash vine borers (SVBs) were getting me down.  After spending the summer of 2021 removing borers from the squash plants and still not seeing much of a harvest, I swore off growing squash, almost. 

The SVB larva grows inside the squash vine (often killing the plant) and then makes a cocoon that overwinters in the soil. The adult moth emerges from the cocoon in spring and lays eggs on the undersides of the squash leaves. The eggs hatch and the larvae begin destroying your plants again. 

One solution is not to have any squash handy for the adults to lay their eggs on (thus the almost swearing off). You can also interrupt this cycle by finding and removing the eggs. That is a real challenge unless you have a small number of plants and time to check every single leaf every day.

We started off the spring season with some lovely Italian cucumbers that were producing well but suddenly began to droop just like the squash had the previous summer.  It turns out that if they don’t find any squash, the borers may settle for your favorite cucumber.  It almost seems spiteful. 

I was persuaded by a team member to try growing butternut squash in late summer. Cucurbita moschata has a reputation for borer resistance.  Throwing caution to the wind, we decided to try zucchino rampicante and calabacita as well.

Despite my skepticism, we have a raised bed full of butternut squash maturing now with no sign of SVBs.

Cucurbita moschata, Butternut squash

The zucchino rampicante is in the same family and has a hard stem that I assumed the borers would not be able to breach. However, we found a few larvae in the stems and removed them. The plant now has huge beautiful leaves and vines that run about 12 feet.  It is producing two foot long fruits that weigh a pound or so. 

The calabacita (Cucurbita pepo), also known as tatume or Mexican zucchini, has a tough, thin vine and has shown few signs of distress from SVBs.  It is taking up a lot of garden space but makes up for it by being very productive. The fruit may be eaten like a thin skinned summer squash or allowed to grow into a soccer ball sized pumpkin.

Going forward I will swear off swearing off. 

Beverly Allen, Dallas County Master Gardener Class of 2018

A Musical Squash for the Edible Garden

Have you wanted to grow squash in your vegetable garden but find that your plants are plagued by squash vine borers before you can harvest even one squash?  Or maybe you are looking for a variety of squash that can be used both as a summer or winter squash?  Or perhaps you would just like to try growing an unusual squash that would be an exotic addition to any edible landscape.  If you answered “yes” to any of these questions, then next summer you might want to grow Tromboncino Rampicante or Italian Edible Squash.

This squash goes by several common names: zucchetta rampicante, climbing zucchini, climbing crookneck, trombolino d’albenga, trombetta and serpentine squash.  It hails from the city of Albenga on the Italian Riviera where it is used in gnocchi and ravioli. Though most squash are in the species Cucurbita pepo, Tromboncino is a cultivar of Cucurbita moschata, which also includes butternut squash. Since its stem is not as hollow as C. pepo, it is more resistant to squash vine borers.  Even squash bugs and powdery mildew do not appear to affect it as readily.  Plus its name “Rampicante” gives away one of its other characteristics.  It grows “rampantly,” with vines often exceeding 15 feet in length.  These long stems, particularly if grown along the ground rather than on a trellis, can root at the nodes, thus giving the plant an even better chance to beat squash vine borers and other insects and diseases.

Some people compare the mild taste of a young Tromboncino to a zucchini.   If left to mature as a long-lasting winter squash, it is more like a watery butternut squash and it keeps very well.  If harvested at about 12 or up to 36 inches, the long neck makes perfectly round slices as opposed to other varieties of squash which have a less uniform shape.  Another advantage to the long neck is that there are no seeds in it. The bulb, which contains the seeds, can be stuffed with a variety of fillings.

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Tromboncino is very easy to grow and likes our hot Dallas weather.  It can be started from seed in late spring, once the ground warms up.  A strong fence or arbor is recommended, especially if you want long, straight squash.  Even on a four foot fence, the Tromboncino pictured in this article started to bow once it touched the soil.  Tromboncino grown on the ground however tend to look less like trombones and more like French Horns, with many twists and curves.  Some people have said that the hardened curved winter squash make great legs for a Halloween spider; while the long straight Tromboncino squash make cute “weiner dogs.”  Because Tromboncino are so prolific, there are many recipes for how to cook with both the squash and the male flowers on the web.

So, if you want to make your garden sing, next year give Tromboncino Rampicante a try.  Just be sure however to give it a lot of room or you may find, like one of the commenters on the web, that he had “…really enjoyed seeing the plants take off and cover the compost heap where I planted it to give plenty of nutrients. I figured since pumpkins have done well as volunteers there that this squash would too, and this one did. Two plants covered the heap and would have covered my SUV, too, if the carport hadn’t shaded them too much.”

Carolyn

 

 

Roasted Butternut Squash Salad with Warm Cider Vinaigrette

Last Tuesday, you would have found Dallas County Master Gardeners on Joe Field Road busy preparing our first and (will be repeated) ” farm to table” lunch.

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Craving just the right salad for your own fall feast? Here is our recipe for roasted butternut squash salad with the,oh so good, warm vinaigrette.

Ingredients:

1 (1 ½-pound) butternut squash, peeled and ¾-inch diced

Good olive oil

1 tablespoon pure maple syrup

Kosher salt and freshly ground black pepper

3 tablespoons dried cranberries

¾ cup apple cider or apple juice

2 tablespoons cider vinegar

2 tablespoons minced shallots

2 teaspoons Dijon mustard

4 ounces baby arugula, washed and spun dry

¼ cup walnut halves, lightly toasted

¾ cup freshly grated Parmesan cheese

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Directions:

1. Preheat the oven to 400 degrees.

2. Place the squash on a sheet pan.  Add 2 tablespoon olive oil, the maple syrup, 1 teaspoon salt and ½ teaspoon pepper and toss.

3. Roast the squash for 15 to 20 minutes, turning once, until tender.  Add the cranberries to the pan for the last 5 minutes.

4. While the squash is roasting, combine the apple cider, vinegar, and shallots in a small saucepan and bring to a boil over medium-high heat.  Cook for 6 to 8 minutes, until the cider is reduced to about ¼ cup.  Off the heat, whisk in the mustard, ½ cup olive oil, 1 teaspoon salt and ½ teaspoon pepper.

5. Place the arugula in a large salad bowl and add the roasted squash mixture, the walnuts, and the grated Parmesan.  Spoon just enough vinaigrette over the salad to moisten, and toss well.  Sprinkle with salt and pepper and serve immediately.

Yield: 4 to 6 servings Adapted from Barefoot Contessa

Linda