Extend your season with containers

container gardening - vegetables

Apples are ripening, mornings are cool, and weeds have slowed, which is natures’ way of telling me that frost is only a few weeks away. As fall approaches, vegetable gardeners are sowing their last cool season crops, ordering garlic for planting in the next month or so, and hoping for a long, moderate fall, so the harvest will continue.

If you don’t have a cold frame or row cover, sowing some cool season veggies in containers is just about the easiest way to extend your season. Manageable containers can be moved to a protected area if frost threatens. Cool season crops thrive in cooler weather and so are the ideal varieties to sow in containers. “Days to maturity” is helpful information, but when growing cool season crops in the fall when the days are shorter and cooler, growth slows, and maturity may take longer, so quick-maturing varieties are a good choice.

Today I sowed some easy-peasy Farmer’s Market Blend mesclun lettuce, and cute-as-button, round, small Tona di Parigi carrots in some long, window box-style containers. Usually, sowing carrots in containers isn’t recommended, but these small, ball-type heirloom carrots don’t need nearly as much root space as other carrots. They also look adorable at Thanksgiving dinner! My window box containers are light enough for me to move indoors and out for cooler weather if I need to, and also, big enough to keep in moisture. Both of the varieties I sowed can handle a light frost (down to 28°F), but if I am concerned, I can just push these containers up against the house and there is enough radiant heat to keep them warm. Hard freezes (below 28°F) will prompt me to bring them into a garage, porch, or shed for more protection. After being indoors overnight, the soil holds some warmth, and so most of the time, the following morning I can just push these back outside to get fresh air and sunshine before heading off to work. Frost tolerance varies among species, so we wrote a frost tolerance article to offer some guidelines.

Here are some tips on choosing or mixing container soil and choosing a container.

I am an optimist at heart, and at this time of year especially, it shows, or should I say it sows! I sow seeds like frost may never come, because though it may be late, I may continue to bring fresh veggies to our table into late fall. Even if the seeds don’t germinate in fall, I often see them as the first, delicious green things up in spring, so my efforts still pay off.

Happy sowing and harvesting, everyone! Share your late season sowing tips with us!

Carrot Tonda di Parigi   Lettuce Mesclun Farmer's Market Blend

 

One thought on “Extend your season with containers

  1. You can extend your growing season even further by placing each of your containers in a 33-gallon clear plastic bag (available in COSTCO or any large grocery store). Place a bamboo pole in the pot, at least as tall as your plant’s maximum height. When it is going to be a cold night, or if the season has moved into wintery temperatures, pull the bag up and tie it to the top of your bamboo pole. On warm days, untie the bag and pull it down again. Though not as effective as cold frames or hoops, which provide the added insulation of the earth itself, I have successfully grown many vegetables through the winter with this method.

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