Native Plants
Q. Who is Mr. Smarty Plants?
A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Monday - July 14, 2008
From: Fallston, MD
Region: Mid-Atlantic
Topic: Non-Natives, Compost and Mulch, Transplants, Watering, Herbs/Forbs
Title: Shriveling and dying of non-native impatiens
Answered by: Barbara Medford
QUESTION:
Several years now many of my impatiens after a month or so seem to shrivel up and eventually die. They are planted in a row and not all are affected. I am not noticing any slug evidence which I would normally suspect. HELP!! Explanation? What can be done? Thanks!!ANSWER:
We think the first question we would ask is why do you keep planting the same plant in the same spot if it isn't working out well? The impatiens flowers commonly sold at nurseries in North America are hybrids and treated as annual plants. They are native to tropical Africa and easily damaged by frosts. Our expertise at the Lady Bird Johnson Wildflower Center is with plants native to North America and recommend planting plants native to your area, for better adaptation to sun, moisture, and soil type. We will first see if we can find some information on why your plants are suffering. Since we don't know how much sun they are getting nor what soil they are trying to grow in, we can only give you general references, and see if you recognize your problem.
Too much sun wilts this plant quickly. It needs a shady spot that gets half a day or less of full sun-preferably morning sun. If you let impatiens dry out too much they will wither quickly and die. One negligent day will do it. Make sure these plants have a moist soil at all times. But not too moist. If you have clay soil, the water you are putting on your plants is probably standing and not draining normally. This will cause root rot and quickly destroy the impatiens. Mulch is a must. We noticed that many of the websites discussed the impatiens as a plant for pots or hanging baskets. This would infer fresh new potting soil each year. If you wish to continue growing impatiens or, in fact, other flowering plants, we would recommend completely refreshing your bed before you plant anything else. Dig in some compost to loosen up that soil and improve drainage. Use a shredded hardwood mulch, which will keep the roots cool and, as it decomposes, provide fresh organic texture to the soil.
Finally, consider using plants native to Maryland. We have selected a few from our Native Plant Database that might be sturdier and more resilient than the impatiens. These are all perennials. They will die down to the base in Winter, but come back in the Spring.
Aquilegia canadensis (red columbine) - sun to shade, up to 2' tall, blooms February to July
Asclepias tuberosa (butterfly milkweed) - up to2' tall, sun to part shade, blooms May to September
Conoclinium coelestinum (blue mistflower) - up to 3' tall, sun to part shade, blooms July to November
Coreopsis lanceolata (lanceleaf tickseed) - up to 2' tall, sun to shade, blooms April to June
Lobelia siphilitica (great blue lobelia) - 1-3' tall, sun to shade, blooms July to October
Monarda didyma (scarlet beebalm) - 3' tall, sun to shade, blooms July and August
Oenothera fruticosa (narrowleaf evening-primrose) - 2' tall, sun, blooms April and May
Phlox divaricata (wild blue phlox) - 18" tall, part shade to shade, blooms March to May
More Watering Questions
Why is my Weeping Fig crying leaves?
July 27, 2009 - I have a weeping fig that I bought Memorial day in Birmingham, Al. It has 8 or 9 trunks growing altogether. It sits on a porch with eastern exposure, only about 2 hours of sun. It has been losing l...
view the full question and answer
Watering Oak Trees in the Summer
July 15, 2011 - Should you water oak trees in the summer? Some people say its not good for them. But many trees seem to be withering up and dying in this heat. Especially the black jack oaks. There are also post ...
view the full question and answer
Problems with Mexican Olive tree from Edinburg TX
October 06, 2013 - My Mexican olive (anacahuita) shows no obvious signs of pest or disease, but over the last years has more and more dead limbs and smaller and smaller leaves. It's in a yard with a sprinkler system t...
view the full question and answer
Watering oaks in Houston, TX.
June 07, 2011 - Our yard (Real County, TX.) has many oak trees. We never water these trees, but I wonder if you recommend watering during this extreme drought. The trees look very stressed and are covered in ball m...
view the full question and answer
Native New Jersey plants to remove iron water from Lawrenceville NJ
October 20, 2012 - Are there any native New Jersey plants that can remove iron water
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |