Tuesday, September 24, 2013

Dandelions

Justin Evertson

         The best time of year for herbicide treatments of dandelions and other perennial lawn weeds is in fall when trees and shrubs are not actively growing and less susceptible to herbicide drift.  In addition perennial weeds will translocate more of an herbicide to their root system in the fall as they actively move energy below ground for winter survival.  This greatly increases the chance that an herbicide will kill the entire weed.  Something else to consider: dandelion leaves can make a cheap and tasty addition to any garden salad.  So instead of poisoning them, consider eating them instead.  That is sweet revenge!

Monday, September 16, 2013

Columbus Project Demonstrates Waterwise Plantings


The Columbus Chamber of Commerce got a grant from Nebraska Statewide Arboretum and Nebraska Environmental Trust (NET) to put in a waterwise project this summer and it’s looking great, so stop by if you’re near.

This large rain garden, designed to capture and filter roof and other runoff, was constructed and installed “on the hottest day of the year” by  Katie Pekarek, Kelly Feehan and Christina Hoyt. The chamber planted many of the plants themselves (in July!) and managed to keep them alive and doing well through the worst of this summer’s heat.
Lawn areas planted with fescue and buffalograss have access to automatic irrigation but a water sensor was installed so even the turf areas should require a minimum of water.
Thanks to the funding from Nebraska Environmental Trust and all the good work done by the UNL Extension Stormwater Team, Kelly Feehan, local contractors, Chamber of Commerce, donations, Columbus Parks Department and many volunteers, the project is off to a good start. The Chamber reports that people are stopping in and complimenting them on the landscape, and Christina Hoyt says it “should be a fun project to watch over the years.”
Existing landscape was a
"blank slate" to start with.



Monday, September 9, 2013

Better Together—Good Combinations Make Rose Gardens Sustainable

 
Strolling Garden across from Lincoln's Sunken Gardens
          
A traditional rose garden can intimidate even the most seasoned gardener with the required fertilizing, pruning, spraying and winterizing.  But newer, hardier varieties of roses—Knockout, Drift, Carefree, ‘Easy going’™ roses—are much less demanding.  Combined with ornamental grasses, perennials and flowering shrubs, a rose garden may be just as easy to manage as any perennial border.
            One of the primary considerations is the width of the planting bed, according to Luann Finke of Finke Gardens & Nursery.  Most roses are about 4’ in height and spread, about the width of many perennial beds or borders.  “It’s difficult to have effective plant combinations or create any sense of flow when there’s only space for one plant,” said Finke.  She recommends borders that are 9-10’ in width to allow space for small plants in the foreground and larger grasses or shrubs in the background. 
            The wider space allows for a slightly bermed area that elevates the roses and shelters smaller edging plants, creating a milder microclimate, extending seasonal interest and providing a much more varied landscape.
            Roses don’t vary much in size and or season of interest.  Shifting the scale with smaller, finely textured groundcovers in the front and arching or vertical shrubs or grasses can make a tremendous difference.  Thinking in terms of perspective is essential in any landscape design, according to Finke. How does it look from inside the house, from an upstairs window, from a patio, sidewalk or driveway?  A wider bed can make planting beds appealing from a variety of viewpoints.
            For areas that will be viewed from close-up, finely-textured plants and subtle colors are effective.  Even just two or three plants can create an effective mix, and large shrubs or grasses in the background can frame the view and give the space more structure. Finke recommends native plants for areas that can hold their own all year long and require a minimum of care.
            Transitions are important.  Spaces around buildings or patios tend to be more formal and linear and areas farther out larger and less manicured.  Varying the plants from tidy, compact species to more free-flowing ones, from subtle colors to more dramatic ones, or from fine-textured to large, bold foliage, can result in that inexplicable sense of rightness a well-designed space provides.
            Paying attention to each plant’s characteristics can also help determine good transitions and combinations: foliage texture, stem color, color of flower bud and of spent petals, spring and fall foliage, growth habit—upright, arching, spreading.
            There are so many plants to choose from and endless combinations to try, Finke said.  “That’s the beauty of public gardens like the new Strolling Garden in central Lincoln.  You can see what you like and what works before trying things in your own yard.” 
Effective Combinations
            Small grouping with subtle colors and silvery, fine-textured foliage:  Pink Gnome rose, Russian sage, Kit Cat catmint, Helen Von Stein lambs’ ear.
            Dramatic, stronger-colored flowers and foliage and contrasting growth habits:  Red Velvet yarrow, Rosy Returns daylily, Husker Red penstemon, National Arboretum fountain grass, Purple Emperor sedum, Gold Bar maidengrass, Salmon Impression rose.           
            Strong yellows and greens in a variety of forms:  Patrinia, My Antonia aster, goldenrod, yarrow, butterfly bush, Yellow Submarine rose.        
            Plants with similar flower colors but different textures and habits:  soft shell pink of Bonica rose with southernwood (Artemisia abrotanum), lambs’ ear, butterfly bush, aster, plumed salvia, Caramel coral bells. 
            Large, dramatic plants and strong colors in this hardy, drought-tolerant planting (not for a small space or timid gardener!):   Purple Pavement rugosa rose, fleeceflower, Amsonia, Joe Pye weed, Northwind switchgrass, sideoats grama, Fireworks goldenrod, My Antonia and Stokes aster, coral bells, Purple Emperor sedum, yucca, butterfly bush, coneflower, purple poppy mallow and sedum.