Growing Vegetables Inside During the Winter?

December 21, 2015

Growing Vegetables Indoors Under Grow LightI have planted radish and carrot seeds in a trough planter. I am growing them indoors using a grow light. I have use homemade compost and Miracle Grow Moisture Control potting mix. The seedlings have sprouted, but there is a white substance growing on the soil. Is this a fungus? I have been using a spray fungicide, but it continues to grow.


Any idea what it is or what I should do about it?

Thank you.

Growing Vegetables Indoors Under Grow Light
Growing Vegetables Indoors Under Grow Light


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December 22, 20151 found this helpful

Three things that come to mind are, water a little less, provide more light if you can, and maybe most important is providing adequate ventilation. If you have a small, personal fan, you could use it to keep a bit of air flow around the plants. This may help more than a fungicide.

Some growers claim a thin layer of milled sphagnum on the surface of the soil will help keep fungi to a minimum. For me, it just caused the fungus to flourish.

If you lose the plants and start over, it may be a good idea to heat treat your soil in a microwave or oven. It should be made to steam and then cooled.

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December 23, 20150 found this helpful

Thank you. I really appreciate your advice. Happy Holidays!

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February 11, 20220 found this helpful

Are you using tap water? This can produce a white sort of crust. Rain water is better if you can collect it.
Marg frrom England.

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3 More Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

September 13, 2009

What vegetables can you grow in your house in the winter?

By miranda robinson from Whitesville, WV


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September 17, 20090 found this helpful

If you are going to grow indoor vegetables in winter, you will need to start by raising plants from seed in late summer or early fall. It's best to buy your seeds in the spring if you wish to do this, because it is not always easy to find seeds for sale at local garden centers in the fall.


Use a light seedling mix for starting your seeds. Its loose consistency will make it easy for the plants new roots to start to develop. After the seedlings have two true leaves, you can begin to carefully transplant them into individual four-inch containers. You can use any good potting soil for this purpose, but do not use regular garden soil. It is usually very heavy, has poor drainage and can also harbor disease and insects that can kill your new starts.

Because you will be watering these plants every day or every other day to keep the roots properly moist, you are also washing nutrients out of the soil. So feed your plants with a complete organic fertilizer every couple of weeks to give them the food they need to grow and flourish.

You will be playing with temperatures when raising indoor vegetables to suit the particular plants you wish to grow. Some vegetables, such as lettuce, endive, and radishes like cooler indoor temperatures. Daytime temperatures in the 60s work well, while night temperatures should go no lower than the 40s. A basement situation might work well to provide these temperatures, or an unheated porch if it doesn't get too cold.


Good luck.

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Bronze Feedback Medal for All Time! 147 Feedbacks
September 17, 20090 found this helpful

Herbs which will grow indoors:

Good luck.

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October 25, 2014

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January 29, 2014

Can I use Essick Air humidifier treatment in my humidifier for growing vegetables inside in the winter months? Would it be harmful to my plants or myself?

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