When do you pick mustard greens, and what do you do about the yellow flowers?
The yellow flowers indicate that the plant is bolting. Bolting will decrease the growth of the leaves and make them more bitter. You can cut the flowers off to slow this, but they normally mark the beginning of the end of the harvest season for the greens.
Here is an article that may be helpful:
https://www.gardeningknowhow.com/edible/vegetables/vgen/what-is-bolting-what-it-means-when-a-plant-bolts.htm
My mustard plants have white scales at the bottom. How do I prevent and control that?
Thank you for sending us your gardening question. Neem oil is an effective way to control scale. It is safe for plants, people, and animals (including beneficial insects). Here is an article that you may find helpful: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
Can you plant a mustard seed from the jar that comes in the spice section? I'm not sure if those seeds have been treated or if they will grow like any other seed. Thank you!
With culinary seeds, you never really know the age of the seeds, or their viability. Some are also heat treated to kill off insects and any bacteria, which would affect germination. Mustard can be grown from these seeds, but only if they are whole and fresh, Otherwise, you will not find much success. Nonetheless, you can still give it a go to see what happens. Many people have had luck growing them this way while others have not. Kinda like flipping a coin.
I harvest all the mustard seeds once there are flowers. When the seeds dry, do I need to put them in the refrigerator or in a brown paper bag to use next year? Also, what is the best apple tree to plant in my zone?
Thanks.
Regarding mustard seeds, this article has good information: https://urbanext.illinois.edu/hortihints/0008c.html
Regarding apple trees for your area, this article should help you out: https://aggie-horticulture.tamu.edu/archives/parsons/publications/fruitlist.html
Why are my mustard greens turning yellow?
This can happen for many reasons. This article may help: https://www.gardeningknowhow.com/plant-problems/environmental/plant-leaves-turn-yellow.htm
I had planted mustard seeds. It smell very bad. What to do to make it smell good?
Have you ever planted mustard before? It contains certain chemical compounds that make mustard so healthful; unfortunately, they also have an odor, to which you may be especially sensitive. There's nothing you can do to change the smell. But you can make sure you have nice health mustard by following the advice in this article: https://www.gardeningknowhow.com/edible/herbs/mustard/growing-mustard-seed.htm
Which soil can we make to use to grow mustard seeds and in which soil is it commonly grown?
Mustard likes a fertile nicely drained loam. If you don't have this type of soil in your garden, you can gradually build it by adding organic amendments. This article will tell you more, and give you a place to start learning about building the soil: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/improving-garden-soil.htm
Here is more information on growing mustard: https://www.gardeningknowhow.com/edible/herbs/mustard/growing-mustard-seed.htm