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Harvey County

Category: Horticulture

Garden Seed Can

Posted on by Harvey County K-State Research and Extension

I know many people save garden seed from year to year. Why would we do this? You may have your favorite variety of watermelon that you just can’t find anywhere so you keep the seed. Besides, garden seed can be expensive, and you may want to consider using seed from previous years to save some money.

sSeed stores best if kept in a cool, dark, dry location. Try a zip-locked plastic bag or a plastic jar such as a reused peanut butter jar to keep seed dry. Seed will be viable longer if kept between 40 and 50 degrees F. Temperatures a bit lower than 40 degrees are fine as long as they are not sub-freezing. Therefore a refrigerator is a better choice than a freezer which can prove detrimental to seed longevity if there is too much moisture in the seed. Seed that has 8% or less moisture can be frozen without harm and will actually store much longer than seed stored above freezing. Seeds dried to 8% or less moisture will break instead of bending when folded. Those that have a hard seed coat such as corn and beans will shatter rather than mashing when struck with a hammer.

Seed longevity will vary depending on the crop. Use the following as a guide for seed stored under cool, dry conditions. Continue reading “Garden Seed Can” →

Water Landscape Plants

Posted on by Harvey County K-State Research and Extension

We all know how unpredictable the weather is in Kansas. This week it’s hot, last week it was wet, next week is supposed to be dry, so it goes on. What happens if it gets too dry? Even in the winter moisture is important!  It is important that perennial plants go into the winter with moist soil. Watering now is important if soils are dry to help alleviate moisture stress and lessen the likelihood of winter damage.

Although all perennial plants benefit from moist soils before winter, it is especially important for newly planted trees and shrubs due to limited root systems. Even trees and shrubs planted within the last 2 to 3 years are more sensitive to drought than a well-established plant. Evergreens are also more at risk because moisture is lost from the foliage. Continue reading “Water Landscape Plants” →

Tilling Your Garden

Posted on by Harvey County K-State Research and Extension

 

Well the leaves are starting to fall and what a site it is!  As is every year there is the question of what to do with the leaves after falling.  Hopefully you have plans such as adding them to you compost pile or mowing them into your lawn.  However, there is another use for leaves!  Autumn is an excellent time to add organic materials and till garden soils.

Winter can still be a good time to take care of this chore as long as the soil isn’t frozen. It is far wiser to till now than to wait until spring when cold, wet conditions can limit your ability to work soils easily. Working soil when it is wet destroys soil structure and results in hard clods that are very slow to break down. On the other hand, dry soil may need to be watered so it can be more easily tilled. Be sure to wait several days after watering to let soil moisture levels moderate. You want the soil moist, not wet or dry, when tilling. There is a limit to how much organic material such as leaves can be added in one application. Normally, a layer 2 inches deep is adequate with 5 to 6 inches being the maximum that can be added at one time. Shredding the material before application encourages faster and more complete decomposition due to increased surface area. Remember, soil preparation is an important key to a successful garden.

When to Prune Shrubs

Posted on by Harvey County K-State Research and Extension

 When do I prune my shrubs?  Great question! Though light pruning and removal of dead wood are fine this time of year, severe pruning should be left until spring. Keep in mind that even light pruning of spring-blooming shrubs such as lilac and forsythia will reduce flowers for next year. We normally recommend that spring-bloomers be pruned after flowering. Shrubs differ in how severely they can be cut back. Junipers do not break bud from within the plant and therefore should be trimmed lightly if you wish to keep the full shape. Overgrown junipers should be removed. 

 On the other hand, there are certain shrubs that can be pruned back severely during the spring. Rejuvenation is the most severe type of pruning and may be used on multi-stem shrubs that have become too large with too many old branches to justify saving the younger canes. All stems are cut back to 3- to 5-inch stubs. This works well for spirea, forsythia, pyracantha, ninebark, Russian almond, little leaf mock orange, shrub roses, and flowering quince. Just remember that spring is the correct time to do this, not now.

Fall Tree Color Variation

Posted on by Harvey County K-State Research and Extension

 Football and leaf fall make this time of year great!  Part of the allure of fall foliage is color variation. There are trees that turn red, purple, yellow, orange and brown. Specific plant pigments determine individual colors. Foliage derives its normal green color from chlorophyll, the substance that captures the energy of the sun. Other pigments produce fall colors. Reds and purples are caused by anthocyanins, yellows by xanthophylls, and oranges by a combination of carotenes and xanthophylls. Browns are the result of tannins present in the leaf.

 Most of these substances are present throughout the growing season but are masked by the green color produced by chlorophyll. Anthocyanins are the exception and are produced after the chlorophyll is destroyed in the fall.

 If you have ever seen pictures of New England in the fall, you have probably wondered why trees in Kansas usually do not color as well. This difference is partly because of the tree species prevalent in New England. Certain oaks and maples naturally produce good color. Coloring also is influenced by the weather. Warm, sunny days and cool nights are ideal for good color. The sunny days encourage photosynthesis and, thus, sugar accumulation in the leaves. As fall progresses, each leaf develops an abscission layer at the base of the petiole, or leaf stem, that prevents these sugars from being transported down the trunk to the roots for storage. This high sugar content in the leaves produces more intense colors. Cloudy days and warm nights prevent some of the sugar accumulation in the leaves and results in less vibrant colors.

 Weather during other parts of the growing season also can have an effect. Heavy rains in the early spring or hot, dry weather during the summer can both have a deleterious effect on fall color. The length of time a tree maintains fall color also depends on weather. Reds, yellows and oranges are short-lived when trees undergo frosts and freezes.

 

Cool Season Lawn Nitrogen

Posted on by Harvey County K-State Research and Extension

October is flying by!  Leaves are beginning to fall and it is just about time to give our cool season lawns some nitrogen.  November is the time to give cool-season lawns the last nitrogen application of the season. Why November? Because while top growth slows in response to cool temperatures, grass plants are still making food (carbohydrates) by photosynthesis. A November nitrogen application helps boost the photosynthesis rate. Carbohydrates that are not used in growth are stored in the crown and other storage tissues in the plant. These carbohydrate reserves help the turf grass green up earlier in the spring and sustain growth into May without the need for early-spring (March or April) nitrogen. Those early-spring nitrogen applications are less desirable because they can lead to excessive shoot growth and reduced root growth.

Other benefits of November-applied nitrogen for cool-season grasses include improved winter hardiness, root growth and shoot density. How much should you apply? One to 1 to 1 ½ pounds actual nitrogen per 1,000 sq. ft. of lawn area is sufficient. Following the recommended spreader setting on the fertilizer bag should apply the correct amount of fertilizer. In order for this application to be effective, the nitrogen must be readily available to the plant, because the growing season is nearly over. Therefore, for a November application, use a soluble (quickly-available) nitrogen carrier such as urea or ammonium sulfate. Many turf grass fertilizers sold in garden centers and other retail outlets also contain soluble nitrogen. Avoid products that contain water-insoluble nitrogen (slow-release) for this application. As always, sweep up any fertilizer that gets on driveways, sidewalks, or streets and reapply it to the lawn.

Leaves on Your Lawn

Posted on by Harvey County K-State Research and Extension

The best thing about Fall is the nice cool temperatures!

The second best thing is leaf color changes to reds, oranges, purples and yellows.  Then soon leaves begin to fall.  When they start falling from deciduous trees so it’s a good time to stop and think about options for handling the litter.

Although a scattering of leaves won’t harm the lawn, excessive cover prevents sunlight from reaching turfgrass plants. Turf left in this state for an extended period will be unable to make the carbohydrates needed to carry it through the winter. There are options for dealing with the fallen leaves other than bagging them up and putting them out for the trash collector.

Continue reading “Leaves on Your Lawn” →