Waterlogged landscape creates special problems

An area of landscape that is saturated with water on a fairly regular basis can be a real problem for homeowners. Similarly, sloping terrain can be a daunting challenge when it comes to lawn care and choosing suitable plants.

Put those two challenges together in one spot – damp conditions and sloping ground – and you’ve got the potential for major headaches! If that’s a problem you’re dealing with, you can sympathize with the reader who sent me this question, and hopefully my answer will give you some inspiration too.

QUESTION: “My family is moving to a new house soon in zone 6. Although very little of the property is landscaped, I'm lucky in that the previous owners clearly prepared much of the ground so it's in great shape for planting. That said, there are some tricky areas, and I'm not sure how to proceed.

1. On one side of the house, the ground is consistently damp. It's a combination of being mostly shaded and being on the "downstream" side of a long slope. While we don't get puddles, it's pretty soggy. There's virtually no grass there, and I can't imagine trying. I'd like to plant perennials and/or shrubs that will "sop up" some of the moisture and prevent erosion, and of course survive in the process. It doesn't have to be drop dead gorgeous, because it's not an area that's very visible, but of course I'd like it to be reasonably attractive. I'd love to know what options I have. I'm thinking various ferns, but what else?
   
   
2. At the top of our driveway, there's a short but fairly steep slope (the driveway goes up the side of the house, and the backyard lawn is elevated above the driveway). I'd say it's about four feet from the base to the top. This area gets a few good hours of sun, but also some shade. It's very visible from the street, so I'd like it to be attractive as well as functional.
   
   
3. In the front of our house are some huge broad leaf evergreens. The areas underneath and around them are very bare. The front yard slopes gradually but visibly down towards the street. What can I plant there?” – Marcy Rosen

ANSWER: As a rule, grass doesn’t usually grow well in wet, shaded areas. You might consider putting in a dry creek bed to try to move some of the dampness to another part of the yard. There are plants that will grow in wet areas, but they will only absorb the amount of moisture that they need and no more. The only way to reduce the dampness is to divert the water (from wherever it comes) to another area of the yard.

Having said that, there are plants that grow well in damp areas. There is an excellent article, titled “Qualifiers for Quagmires: Landscape Plants for Wet Sites” posted online by the Extension Service of NC State University. You can find it at: http://www.ces.ncsu.edu/depts/hort/hil/hil-646.html and you can click on a link from this column at my Web site www.landsteward.org

That article includes a comprehensive list of damp-tolerant trees, shrubs and herbaceous perennials, including those species have been known to tolerate flooded conditions for extended periods of time. Well worth checking out if you’re a victim of wet landscape.

Concerning the sloped area at the top of your driveway, you might want to look at junipers, evergreen euonymus (such as manhattan), hydrangeas, bamboo and nandinas.

On planting something underneath your broadleaf evergreen trees, it kind of depends on what the trees are, how dense they are in the front yard and how much space there is before the first branching. It is often difficult to get shrubs or perennials to grow in heavily shaded areas such as that. There are a number of groundcovers that can perform well in situations such as yours. Consider planting vinca, pachysandra and wintercreeper. Groundcovers are a very viable and attractive alternative to both grass and shrubs in conditions such as you describe.

The Plant Man is here to help. Send your questions about trees, shrubs and landscaping to steve@landsteward.org and for resources and additional information, including archived columns, visit www.landsteward.org

Planting for privacy and peace of mind

QUESTION: “I am wanting to plant something around one end of my pool for privacy. My only concern is that the plants should not have a very big root system due to it being around 2 – 3 feet from my cement. I also need something that will grow 10 – 12 feet high. I do not need total privacy, just something that will break up the view of my pool.” – Ronnie Holloway

ANSWER: Tall growing ornamental grasses work beautifully in pool areas as do clumping bamboo (which I would recommend planting in large pots for extra height). Most shrubs or low growing trees are going to produce root systems that may bump up against the concrete. Another thought is to berm the area so that shrubs such as junipers or cypress (evergreens) can be planted with root space.

Since space may be limited, landscaping with large pots or containers is a gorgeous way to bring in tall growing plants (depending on where you live, of course). Bamboo, grasses, holly, other broadleaf evergreens with a blending of seasonal color (perennials) can create a most interesting setting and provides needed privacy.

I hope this gives you some ideas to build on.

QUESTION: “We bought a home in the woods. We have a lot behind us that is approximately one-half acre and narrow. The lot was sold and all the beautiful 200 year old pine trees were taken down. They built a home on stilts and proceeded to put a dog pen attached to the home in the back. I planted a few Thuga trees in anticipation of this but we have many deer and they have feasted on them this winter. The house is placed directly behind us, giving us about 30 feet between the two homes. Help! What can I do?” – Carole

ANSWER: That does sound terrible. Step one would be to install panels (you know, like the lattice type or fencing panels) so that they are more tall than wide. This will at least give you immediate privacy and peace of mind. Then you can work (gradually if necessary) on providing landscaping to fill in with the fencing.

If you choose the lattice panels, plant some type of ivy or Carolina Jessamine to grow up and fill that in.

As you begin to fill in with landscaping keep in mind to layer plants. Larger (or taller) plants especially evergreens planted in the back half of the area coming forward with shorter deciduous, ornamental grasses and other evergreen plants finishing off with colorful perennials in front.

Cheryl and I have put together a slideshow that you access via our Web site www.landsteward.org It should give you a few ideas on layering plants in the landscape. Look for the link on the right of the home page that says Ideas Slide Show.

The next question comes from a reader who brings up a very good point about being careful about what can be planted in proximity to blackberry plants.

QUESTION: “I have 18 blackberry plants. My question is how far from the blackberries can I plant tomatoes? My blackberry plants have been in the ground approximately 12 months.” – Harold Daniels

ANSWER: Tomatoes, potatoes, peppers, and eggplant carry root rot called verticillium which can harm blackberry and raspberry plants. Berry plants should not be planted in soil where these vegetables have grown within the past 4 years. 30 to 50 feet away might be a good distance. The biggest thing you will want to look for is drainage. When it rains or you water the tomatoes or other vegetables, you do not want the water draining down towards your berry plants.

As I mentioned above, Cheryl and I have put together a slide show of color photos and descriptions, and readers are writing to tell us they are getting some good ideas from them. You are welcome to go to our Web site and “slide” through the pics!

The Plant Man is here to help. Send your questions about trees, shrubs and landscaping to steve@landsteward.org and for resources and additional information, including archived columns, visit www.landsteward.org