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Serving Topeka & Northeast Kansas Since 1936
If you haven't visited us in person, this is your invitation to do so. Our State-of-the-Art Garden Center & Nursery in Topeka on 33+ acres is your one stop shopping headquarters.

Tree Sale
All Trees 25-60% Off
Hundreds of Beautiful Trees to Choose From
(Includes regular priced trees - While Supply Lasts - Cash & Carry Only))

Cleveland Select
or Redspire Flowering Pear

2" Caliper
$129.99 (
Reg, $299.99)

All Shrubs, Perennials, Evergreens, Ornamental Grasses and Roses
(Includes regular priced plants - While Supply Lasts - Cash & Carry Only))

50-80% Off

Sun Valley Maple
2" Caliper (12-14')
$139.99 or 2/$240.00
Reg. $329.99)

Open Monday - Saturday 9:00 - 5:30
Still a Great Time To Plant

This is a great time to update your landscape plans, and our professional design staff can turn your lawn and landscape into a showplace.

Why Waste Time Shopping Hardware, Lumber Store and Other Parking Lots,
We have The Highest Quality, Affordable Plants,

Time To Apply Fertilizer - Call for Details & Specials

Christmas Holiday Open House - November 17th & 18th


Choose from thousands of the highest quality trees, shrubs, flowers, ornamental grasses and evergreens. Shop inside on those rainy days in our over 12000 sq. ft. of Greenhouse space.
You'll find thousands of annuals, perennials and shrubs waiting for you.
Come see for yourself and compare the quality of our merchandise.

We have the friendly professional staff to help with all your lawn and garden needs

You can buy plants many places, but one stop is all it will take to convince you why you should join our "family" of satisfied clients.

Ask About our 5 YEAR GUARANTEE on Trees & Shrubs
and our 3 YEAR GUARANTEE on Perennials.

Anyone can claim quality and satisfied customers, but we want you to stop by and see for yourself why our family of clients say

"Buy The Best ! You can Afford it At Blackburn's."
"If you can't find what you want, you're not looking".

Come out & see the new arrivals of decorations and gifts
We have holiday,everyday and seasonal gifts for everyone on your list. All your KU, KSU, Collegiate, Armed Forces and more.We also have a terrific Selection of Stained Glass sun catchers, Candle burners, and Beanpod soy candles.
Check out the new wind chimes, statuary, fountains, patio furniture and collegiate wind vanes & clocks You'll also enjoy shopping our outdoor collection of benches, Bistro sets and more.

Using Leaf Compost

Next Tip




Prepared by: Roy L. Flannery, Specialist in Soils; and Franklin B. Flower, Specialist in Environmental Sciences.

Composting involves primarily the microbial decomposition of organic matter. Compost - the end product - is a dark, friable, partially decomposed substance similar to natural organic matter found in the soil. The organic matter content of soils is very important. It influences the physical condition, water-holding capacity, and temperature of the soil, and especially the soil bacterial processes which affect the availability of mineral salts to plants.

Why Compost Leaves

If newly fallen leaves are added directly to the soil without first being composted, the microbes that decompose the leaves compete with growing plants for soil nitrogen. The temporary nitrogen shortage caused by the microbes can reduce plant growth. To reduce or eliminate this competition for nitrogen, composting of the leaves is recommended prior to incorporating them into soils. Need for Organic Matter Most soils need an increase of 1/2 to 1% in organic matter. Sandy soils, such as loamy sands and sands, and soils with very high clay content are improved the most by an increase in organic matter content.

Benefits of Adding Leaf Compost to Soil

Among the benefits derived from adding leaf compost to New Jersey soils are:

    * Drought damage to plants is reduced because of an increased water-holding capacity of the soils.

    * Soil tilth is improved making the soils easier to cultivate.

    * Very small amounts of the 16 essential elements needed for plant growth are supplied.

    * Adverse effects of excessive alkalinity, acidity, or over-fertilization are reduced by the added buffering of the soil.

    * The cation exchange capacity of soils is increased, enabling the soils to hold more plant nutrients for longer periods.

    * Decomposition of the organic matter produces organic acids which combine with iron and aluminum ions, thereby reducing their potential toxicity to plants. This also makes more phosphorus available for plants because free iron and aluminum can tie up the phosphates.

    * The added organic matter provides a food source for desirable soil micro-organisms.

    * When incorporated into the soil, or used in a thin mulch 1/16- to 1/8-inch thick, compost helps seeds to germinate.

Overall, compost improves the physical, chemical, and biological properties of soils. Leaf compost, however, is not normally considered a fertilizer as it is too low in nutrient content. It serves primarily as an organic amendment and a soil conditioner. The nitrogen content of composted leaves on a dry basis is about 1/2 to 1% by weight. For other materials commonly added to backyard leaf compost piles, the nitrogen content is: blood meal 10-14%; grass clippings 2-4%; coffee grounds 1 1/2-2%; eggshells 1-2%; horse manure 1-5%; cow manure 1-1 1/2%; poultry manure 3-5%; ammonium sulfate 20 1/2%; urea 45%; bone meal 1 1/2-4%; and cotton seed meal 6-7%.

When Compost is Ready to Use

When compost is ready to use (6 to l8 months after starting) its temperature will generally have decreased to slightly above air temperature. Finished compost will usually be drier than leaves during composting. The material also will be crumbly in texture. Before using compost, "screening" may be necessary to remove the larger partially decomposed materials. These materials will sometimes be present in composting piles because not all items decompose at the same rate. The undecomposed organic matter clumps may be broken up and added to another active compost pile for additional decomposition.

Adding Leaf Compost to the Soil

A good rate of organic matter to work into the top 6 1/2 to 7 inches of most cultivated soils is 0.5 to 1.0% organic matter by weight. This is equivalent to adding 900 to 1,800 wet pounds (25 to 50 bushels) of leaf compost per 1,000 square feet of area. To accomplish this, spread a 3/8- to 3/4-inch depth of leaf compost uniformly over the soil surface and mix into the top 6 to 8 inches of soil.

Little or no nitrogen will be released from compost for plant use during the season immediately following incorporation into the soil. It is generally necessary to add nitrogen to soils containing compost to prevent the compost from "robbing" the soil of nitrogen and creating deficiency problems in plants grown in the soil. Adding 1 to 1 1/2 lbs. of 10% nitrogen fertilizer to each 100 lbs. (about 3 bushels) of leaf compost is recommended.

The preceding recommendations supply only the needs of the leaf compost. Most plants require an additional 1 to 3 lbs. of actual nitrogen per 1,000 square feet for normal feeding. This nitrogen should be applied to the soil in addition to that applied in the leaf compost.

Using Leaf Compost as a Mulch

Leaf compost can also be used as an organic mulch on the surface of soil in place of peatmoss, straw, etc. Organic mulches are valuable because they: oReduce rainfall runoff, thereby making more water available for plant growth.

    * Decrease water evaporation losses from the soil.

    * Keep the soils cooler in hot weather and warmer in cold weather.

    * Reduce alternate freezing and thawing of soils which can injure the fibrous roots of plants.

    * Help to prevent soil erosion by wind or water.

    * Keep soils friable, therefore easier to cultivate.

    * Increase biological activity of earthworms and other soil organisms.

    * Prevent soil spattering on leaves, flowers, or fruits such as strawberries.

    * Reduce soil compaction from rain and irrigation water.

    * Help to control weeds. oPresent a pleasing appearance.

Recommended thicknesses of mulch layers: 2-3 inches for deciduous shrubs and trees, vegetables, and rosebeds; 3 inches for flower beds; and 3-4 inches for shallow-rooted, acid-loving plants.

Other Uses for Leaf Compost

Leaf compost may also be used in potting soil. However, no more than 25 to 30% of the potting soil should be leaf compost. Frequently leaf compost will continue to decompose. If more that 25 to 30% of the potting soil is leaf compost, there will be a significant volume reduction of the potting soil after 1 year.

Composting generally destroys most weed seeds contained in the compost material; however, not all of them will be destroyed. Some are heat resistant, and others will not be fully exposed to the high temperatures. If a completely pasteurized leaf compost is desired for potting soil, it will be necessary to heat it in an oven until the temperature of the center of the mass reaches 180 F and is maintained for 30 minutes.

Notice: The information contained on the following web pages is derived from industry sources which are considered reliable. Information is subject to change and withdrawal without notice; therefore, it is the responsibility of the consumer to verify reliability on an individual basis based on specific consumer needs. We assume no responsibility, and extend no guarantees for information provided. Trademarked names are used in an editorial context with no intent of trademark infringement.

Notice: The information contained on the following web pages is derived from industry sources which are considered reliable. Information is subject to change and withdrawal without notice; therefore, it is the responsibility of the consumer to verify reliability on an individual basis based on specific consumer needs. We assume no responsibility, and extend no guarantees for information provided. Trademarked names are used in an editorial context with no intent of trademark infringement.

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