Dear Readers, Man, oh man – will we ever again have the good ol’ transitions of Spring that we remember from our youth? 2011 marks the 4th season in a row that we have had really unusual weather patterns-from the heat/drought conditions of Spring 2007, to the extremely cool and wet conditions that we “enjoyed” as we kicked of this year’s growing season. It’s been hard on you to get out into your gardens, and imagine how it’s been to try and plan production! I guess we never have to worry about being complacent or bored here in central Indiana – and let’s be thankful we’ve not seen some of the more catastrophic issues that we’ve seen in Joplin, and along the Mississippi.
Now that we are having hotter weather on the heels of all that moisture, there are two things that we’re seeing a bit earlier than normal.
1. Dollar Spot in Turf – this is a common disease to Indiana turfgrasses. The disease is named for the straw-colored, silver dollar-sized spots that appear in turf. The spots can appear larger in turf that is mowed higher. They will grow to become somewhat irregular circles 3-6 inches in diameter, and as the spots grow together, large areas of damage can occur. This disease occurs more often (though not exclusively) in lawns that are nitrogen deficient. Best practice for control is to apply fertilizer, and water infrequently and deeply. Additionally, it is best to mow only when the lawn is dry, to avoid spreading the disease. This is usually sufficient to bring the condition under control, but Dollar Spot does respond quickly to professional applications of fungicides.
*Remember though, that this is a cultural issue, and fungicides are only treatments, and not preventative at all. So if you don’t change the cultural issue, you’ll just get a repeat infestation.
2. Powdery Mildew – Another fungal disease, but this one affects a variety of landscape plants. It’s pretty easy to spot, because of its distinct appearance. The plant will display leaves which appear to be coated in a thin, whitish powder. It’s unsightly, but generally not harmful – though it should be noted that some leaves on the plant may become distorted, and any disease can weaken the plant over time, and leave it more susceptible to other issues and infestations. The main cause is poor air circulation, which can be created or compounded by plants that are too dense, or are planted too close together. Your best practice for control here is also cultural. Choose healthy plants, and disease-resistant varieties. Where possible, avoid planting non-resistant plants in the shade. Keep your shrubs and trees well-thinned and pruned, and divide plants often, to keep them from becoming too crowded. And if you do find yourself with an infected plant, follow a few basic guidelines: Improve air circulation by thinning and pruning, avoid watering plants from above, and most of all – wait to do any fertilization. Powdery Mildew prefers young, succulent growth, so best not to give it a perfect host for multiplying.
Virtually every plant can get Powdery Mildew, but it’s most common in the landscape on Dogwood, Lilac, Roses, and Crabapple. It is host-specific, which means that a different type of fungi will affect different types of plants. So your Dogwood mildew will not spread to your lilac, etc. But all types favor the same conditions. And just like Dollar Spot, it both responds well to fungicide, and will come back if you don’t change the environmental conditions that cause it, wherever possible.
I guess if there were no challenges to be had in the garden, there wouldn’t be a need for the gardening professional. If you need more help with your specific challenges, don’t hesitate to call us.
Happy gardening!
Chris
___________________________________________________________________ Gardens of Growth is a landscape architecture design/build firm based in Indianapolis, Indiana. We remain committed to acting as both designer and contractor for our projects. Many design/build firms are contractors first. Gardens of Growth is unique because we are designers first. We welcome design and construction challenges and approach everything we do as artisans. It is our belief that beautiful spaces are created when each and every component of the landscape is carefully designed and executed. The team at Gardens of Growth is responsible for building and maintaining custom gardens. We provide a variety of products and services including: planting, design, retaining walls, patios, decks, fences, pergolas, water features, sculpture, driveways, pools, site grading, landscape lighting, irrigation, masonry, mowing, pruning & landscape maintenance. Visit us at gardensofgrowth.com or call 251.GROW for more information.Gardens of Growth, Inc. 928 E. 38th St. Indianapolis, IN 46250