Ohio Spiderwort (Tradescantia ohiensis) is indeed considered an invasive plant species in many regions. Its aggressive nature and ability to self-seed make it a challenging plant to control in gardens and landscapes. As you mentioned, it tends to grow in tight bundles, forming dense patches that can quickly overtake other plants in the yard.
One of the reasons for its invasiveness is its ability to produce a large number of seeds. These seeds are easily dispersed by wind, animals, or even human activities, allowing spiderwort to spread rapidly. This can be particularly problematic in areas with favorable growing conditions, as the plant can quickly establish itself and outcompete native vegetation.
In addition to its prolific seed production, spiderwort also has a robust root system that can make it difficult to remove. The roots tend to grow down about 2-3 inches and form tightly packed clusters. This can make it challenging to pull the plant out completely, as even a small piece of root left behind can regrow into a new plant.
I have personally encountered spiderwort in my own garden, and I can attest to its vigorous growth. Once established, it seemed to pop up everywhere, forming dense clumps that were difficult to control. Despite my best efforts to remove it manually, the plant persisted, and I had to resort to additional measures to keep it in check.
To effectively manage spiderwort in your yard, it is important to employ a combination of strategies. Here are some options to consider:
1. Manual removal: While it may be time-consuming and challenging due to the dense root system, manually pulling out spiderwort can help reduce its population. Ensure you remove as much of the root system as possible to minimize regrowth.
2. Mulching: Applying a thick layer of organic mulch around desirable plants can help suppress spiderwort growth. This will also help prevent new seedlings from emerging by blocking sunlight and inhibiting seed germination.
3. Regular maintenance: Stay vigilant and regularly monitor your yard for any new spiderwort growth. As soon as you spot any plants, promptly remove them to prevent further spread.
4. Chemical control: As a last resort, you may consider using herbicides specifically formulated to target broadleaf weeds. Make sure to carefully follow the instructions on the product label and consider using selective herbicides to minimize harm to desirable plants.
It is important to note that the invasiveness of spiderwort can vary depending on the specific region and growing conditions. In some areas, it may be more problematic than others. Therefore, it is always advisable to consult with local gardening or horticulture experts who are familiar with the specific challenges in your area.
Ohio Spiderwort is indeed an invasive plant species that can be aggressive in its growth and spread. Its ability to self-seed, along with its dense root system, make it a challenging plant to control. Employing a combination of manual removal, mulching, regular maintenance, and, if necessary, targeted herbicide use can help manage spiderwort in your yard.
