Can, and when do you prune yarrow? Just bought some from Lowe's called desert eve and can't find any information on them.
Remove the old flowers as they become brown.
Cut the flower stem back to right above the spot where a branching, or lateral, flower shoots off to the side. Deadheading also prevents yarrow from spreading through your yard, as it is an effective self-seeder when the dead flowers are allowed to dry completely and go to seed.
Cut back yarrow to within 6 inches of the ground after it has finished flowering. In colder climates, cut it back as one of the last chores in your garden before the snow flies. In warmer climates, cut it back in the spring before it begins to bud. Cutting back will promote new growth, giving you a healthier plant with stronger stems.
Is there a fertilizer or soil amendment that will keep pink yarrow from turning white?
There is nothing you can add to the soil to keep the color.
To keep the color, regular division replanting only the colorful segments should help. Making sure the plant gets plenty of sun, drains very well ,and that the soil is not very rich is the best way to keep the more colorful cultivars going.
It seems this plant will self seed readily but most likely be white. As the red and pinks die off the white replaces them. Root rot in rich wet soil most common reason for die off.
https://www.gardeningknowhow.com/edible/herbs/yarrow/growing-yarrow.htm
The base of the stem of my yarrow plants are dead looking and have turned black ,and the leaves are dead. The top portion of the stem is green and the plant is still blooming. Should I cut the plant back or wait until Fall?
This happens quite often in my garden as well. The lack of air circulation at the base of the plant is the cause of this darkening and die back.
If you don't mind a bit of a messy garden, leave until the flower is done. If you want to clean up the garden, go ahead and cut the plants back.
In my own garden Yarrow can be a bit invasive, so I'm pretty ruthless with the plants. If they flop over or start looking a bit rough, I yank them right out.
https://www.gardeningknowhow.com/edible/herbs/yarrow/growing-yarrow.htm
could yarrow be planted in a pot outdoors and seeds collected for next season? I have a very small garden so I don't want to risk planting anything that might become invasive.
Yarrow (Achillea millefolium) is also called "milfoil." It's a flowering ornamental perennial that's often included in butterfly gardens. Different species of yarrow are native to different parts of the world; native species are found in Asia, Europe, and the United States.
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/zone-5-yarrow-plants.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/zone-5-yarrow-plants.htm
describe please humidity of yarrow
This plant grows in USDA zones 3-9, and is not particular about the humidity levels. This plant grows so easily that it is classified as invasive in many areas.
This article will give you more information on the plant: https://www.gardeningknowhow.com/edible/herbs/yarrow/growing-yarrow.htm
Should I only pick flowers? I am interested in drying for tea and using fresh for salads & soups!
These articles should help! One is about tea garden plants. Choose a dry morning to harvest your yarrow.
https://www.gardeningknowhow.com/edible/herbs/hgen/herbal-tea-plants.htm
https://www.gardeningknowhow.com/edible/herbs/yarrow/growing-yarrow.htm
https://www.gardeningknowhow.com/edible/herbs/yarrow/yarrow-plant-uses-and-benefits.htm
my paprika yarrow had red blossoms the first year. this year, green foliage, perky plants but either dull yellow or brown blossoms. Plant is healthy, blossoms look awful and I want red. What to do?
n general, the pink or red flowers do fade and change color as they mature on the plant and this can sometimes provide a pleasing, multi colored effect. When the flowers are past their prime and go to seed and dry out, they typically bleach out and turn white with age. Regular deadheading would prevent that from being seen in the garden. Sometimes too the weather can cause poor color quality, as when night temperatures are above about 70 degrees.
They also can self seed and revert back to a white; deadheading can help this also.