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Plant of the Week
Lobelia
| Scientific name | Lobelia erinus |
| Common name | Lobelia |
| Type | Annuals |
| Variety | Annual |
| USDA Zone hardiness | 1 - 8b |
| Exposure | Full sun |
| Height | Under 1' |
| Spread | Under 1' |
A low growing perennial generally grown as an annual. Grown in full sun to shade, does better in the cooler weather and often goes out of bloom when it gets hot. Look for heat tolerant cultivars. Cut back after first bloom, fertilize and water to maintain flowering in the summer.
Recent Question from Gardeners
Question
Hydrangea With An Orange Vine On It
My hydrangea had a orange colored vine starting to grow on it late in the season last year. Thus year it has completely taken it over. I don't know what the vine is or how to get rid of it without killing the hydrangea. Should I just kill all of it and replant?
Answer
Sounds like you are describing Dodder which a parasitic weed that attaches its self to the host plant. Once attached the dodder absorbs water and nutrients through haustoria which are modified adventitious roots that penetrate the host tissue. Controlling dodder can be difficult if it is allowed to set seed, seeds can remain dormant in the soil for many years. In your case I would manually remove the dodder from your hydrangea and continue to do so every time you see more growing. In the spring before the dodder seeds germinate a pre-emergent herbicides such as DCPA (Dacthal) or trifluralin can applied to the soil.
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