Anemone virginiana is an upright growing herbaceous species of flowering plant buttercup family Ranunculaceae. It is a perennial that grows 30–80 centimetres (12–31 in) tall, flowering from May until July, the flowers are white or greenish-white. After flowering the fruits are produced in a dense rounded thimble shaped spikes 15–35 millimetres (0.59–1.38 in) long and 12 millimetres (0.47 in) wide. When the fruits, called achenes, are ripe they have gray-white colored, densely woolly styles, that allow them to blow away in the wind. The leaf structure is whorled halfway up the stem and each individual leaf appears to be deeply cut. Native from eastern North America, where it is found growing in dry or open woods. This plant can be found in 38 out of the 50 states in the U.S. and is located anywhere from Maine to Minnesota going west, and found as far south as Georgia and Louisiana. Common names include tall anemone, thimble-weed and tumble-weed. Note that several other plant species are known as "thimbleweed".
Although this plant sometimes is called a "tumbleweed", it lacks the characteristic tumbleweed habit. The fruit resembles a tumbleweed in that it is wind-dispersed and tumbles, an unusual mechanism of seed dispersal (see Diaspore (botany)). Anemone virginiana was also given the common name "Thimbleweed" due to its pistil resembling the shape of a thimble. This plant is very durable in different weather conditions, ranging from part shade to sun and being drought and cold tolerant. It prefers acidic soils but will tolerate liming, making it great for gardens.
Tall Thimbleweed is largely disease-resistant and generally not prone to illnesses. Nevertheless, it can be vulnerable to pests and diseases present in its environment. These problems are typically not serious. In terms of care, the plant requires moderate maintenance. It should be pruned regularly to keep a neat appearance and support healthy growth. Fertilizing can also encourage flowering. Tall Thimbleweed is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive experience in plant care. It may need more attention when cultivated indoors.
How to keep Anemone Virginiana.
Light
Tall Thimbleweed prefers locations that receive moderate sunlight during the day. It can, however, adapt to spots that are constantly in sunlight or wrapped in shade. Its native habitat had varying amounts of sunlight, which shaped its adaptability. Too much or too little light can hamper its growth or cause the leaves to discolor.
Water
Tall Thimbleweed thrives in well-draining soil with moderate moisture, reflecting its temperate origins. To keep it healthy, water it weekly, ensuring the soil remains hydrated without becoming waterlogged. Although it can tolerate drought, providing consistent moisture, especially during its active growing season, promotes healthy growth and helps prevent root rot.
Temperature
Tall Thimbleweed favors a moderate temperature range of 32 to 90 ℉ (0 to 32 ℃) for best growth. The plant does well in its native surroundings with moderate temperatures and can adapt successfully to temperature fluctuations across the seasons.
Fertilizer
Usually one spring application of fertilizer is enough for Tall Thimbleweed, though multiple feedings can boost growth. Apply fertilizer every month to six weeks. Fertilizing improves leaf look and function, maintaining even color and a healthy texture. It also promotes root development and nutrient uptake, supporting the plant’s long-term health.
Pruning
Tall Thimbleweed is known for its upright growth and distinctive seed heads. To maintain its health, prune the plant in early to late spring. This will help remove any damaged stems and promote healthy growth. Minimal pruning is recommended, as it helps preserve the plant's natural shape, enhances flowering, and improves airflow, reducing the risk of disease.
Pot & Repot
To promote growth and prevent overcrowding, repot tall Thimbleweed every 2-3 years in early spring. Choose a medium-sized pot that offers good drainage. After repotting, place the plant in bright, indirect light and maintain consistently moist soil, making sure to avoid waterlogging. Provide extra care during the recovery period.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Anemone
- Family
- Ranunculaceae
- Hardiness Zone
- 3-8
- Mature Height
- 30 cm to 76 cm
- Mature Spread
- 30 cm to 46 cm
- Leaf Color
- Green
- Leaf Type
- Deciduous
- Flower Color
- White
- Flower Size
- 2.54 cm
- Bloom Time
- Early summer, Mid summer
- Planting Time
- Spring
- Harvest Time
- Mid summer
Other names.
Reader questions.
How should I water my Tall Thimbleweed plant in the best way?
To properly care for the Tall Thimbleweed, it's important to consider a few factors when watering. Firstly, using filtered water at room temperature is ideal. Tap water may have harmful particles that can be damaging to this plant. Additionally, the water should not be too cold as the Tall Thimbleweed is accustomed to warm environments and cold water can be a shock to its system. It's also best to avoid overhead watering as it can lead to foliage issues. Instead, gently and thoroughly water the soil with filtered room temperature water until it is completely soaked. This helps to keep the roots moist and allows them to spread and absorb the necessary nutrients from the soil.
Why should I put fertilizer on my Tall Thimbleweed?
The Tall Thimbleweed relies on its leaves for structure, so it's important to fertilize them to maintain their appearance and functionality. Proper fertilization will ensure consistent color and a healthy texture in the leaves. Fertilization also benefits the plant beneath the soil by promoting new root growth and maintaining existing roots. This not only keeps the plant healthy in the present, but also improves its ability to absorb nutrients from the soil in the future.
What are the sunlight requirements for Tall Thimbleweed?
Tall Thimbleweed thrives in a variety of sunlight conditions, from moderate sunlight throughout the day to constant sunlight or complete shade. Its adaptability stems from its native habitat's varying light exposure. However, excessive or insufficient light may hinder its growth or cause leaf discoloration. Generally, plants need partial sun (3-6 hours of sunlight) or full sun/full shade (above 6 hours of sunlight). It's crucial to observe sunlight movement in your garden to find the best spots for your plants.
What are the essential growing conditions for Tall Thimbleweed?
Tall Thimbleweed, scientifically known as Anemone virginiana, thrives in a moderate temperature range between 32 to 90°F (0 to 32°C) for optimal growth. This plant is native to environments with moderate temperatures and has a strong cold resistance, making special frost protection measures usually unnecessary. However, if winter temperatures are expected to drop below the plant's cold tolerance limit, providing cold protection with soil or straw covering is important. To prepare for winter, it is recommended to water the plant abundantly before the first freeze of autumn, ensuring the soil remains moist through the colder months.
What do I need to do if I give my Tall Thimbleweed plant too much or too little water?
Overwatering and underwatering both harm the health of a Tall Thimbleweed, but overwatering is more common. Too much water causes wilting, yellowing, and diseases like root rot, mold, and mildew that can kill the plant. The Tall Thimbleweed is fairly drought tolerant, so underwatering is less likely but still possible. Signs of underwatering include brittle, brown leaves. It's important to notice and address overwatering as soon as possible. Some diseases from overwatering, like root rot, may be irreversible if not caught early. If signs of overwatering appear, reduce watering and check the soil drainage. If the soil drains poorly, replace it with well-draining potting mix. If the signs point to underwatering, increase watering until the signs improve.
When should I put fertilizer on my Tall Thimbleweed?
If you grow your Tall Thimbleweed outdoors, you will notice new growth in early spring. This is a signal to start fertilizing the plant. Usually, one application of fertilizer is enough for the plant to thrive. However, if you want to maximize growth, you can fertilize multiple times in the spring and early summer. Aim to feed your plant once every month to a month and a half during this period.
How can artificial lighting support indoor growth of Tall Thimbleweed?
For optimal indoor growth, especially when natural sunlight is insufficient, artificial lighting is essential. LED lights are recommended due to their customizable light wavelengths. Full sun plants require 30-50W/sq ft, partial sun plants need 20-30W/sq ft, and full shade plants should have 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant, and the duration should mimic natural daylight hours, typically 8-12 hours per day.
How should Tall Thimbleweed be cared for in low temperatures?
Tall Thimbleweed is cold-tolerant and best grows when temperatures are maintained above its minimal suitable growth temperature. During winter, it is crucial to ensure the temperature stays above its tolerable growing minimum. If temperatures fall below the growth limit, you may not see immediate effects, but there could be a reduction or absence of sprouting in spring. As a solution, it is recommended to remove any parts of the plant that have failed to sprout in the spring.
How often do I need to water my Tall Thimbleweed?
If your Tall Thimbleweed is in a pot, the best way to determine if it needs water is by sticking your finger in the soil. If the top two to three inches feel dry, it's time to water it. For Tall Thimbleweeds grown outdoors, you can use a similar method. When the top few inches of soil are dry, it's time to water. In spring and early fall, watering once a week is usually sufficient, but during extremely hot weather, you may need to water twice or more per week. However, mature and well-established Tall Thimbleweeds can withstand drought well.
When is the best time to not add fertilizer to my Tall Thimbleweed?
In the late fall and winter, your Tall Thimbleweed goes into a dormant phase and stops growing. During this time, you should avoid fertilizing it. In the spring and summer, if you decide to fertilize, gradually decrease the amount of fertilizer as summer approaches because the growth rate of the Tall Thimbleweed will also slow down. In general, it is not advisable to fertilize your Tall Thimbleweed when it's extremely hot or the soil is very dry. Fertilizing in these conditions can stress the plant and cause it to die prematurely.
What are some symptoms of light deficiency or excessive light in Tall Thimbleweed?
Symptoms of insufficient light include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no growth, and lighter-colored new leaves, indicating potential chlorophyll and nutrient deficiencies. Excessive sunlight can cause chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These conditions highlight the importance of balanced light exposure for maintaining plant health.
What measures should be taken for Tall Thimbleweed in high temperatures?
During summer, it's important to keep Tall Thimbleweed below its maximum suitable growth temperature. Exceeding its tolerable growing maximum can cause the leaves to lighten in color, become prone to curling, experience sunburn, and, in severe cases, lead to the wilting and drying of the entire plant. To mitigate these issues, trim away sunburned and dried-up parts, move the plant to a location with afternoon shade, or use a shade cloth. Additionally, watering the plant in the morning and evening helps maintain soil moisture.
