Sanguinaria canadensis
SPECIMEN · FROM THE LIBRARY
Sanguinaria canadensis

Sanguinaria Canadensis

Photo · (c) Haley Selen, some rights reserved (CC BY-NC), uploaded by Haley Selen COURTESY INATURALIST
ON THIS PLANT

Sanguinaria canadensis, commonly known as bloodroot, is a perennial flowering plant native to eastern North America. A member of the poppy family, it grows up to 30 cm tall and derives its name from the red sap that oozes from its roots when cut or broken.

Bloodroot is recognizable by its distinctive lobed leaves that appear in early spring, followed by white flowers with yellow centers. These flowers bloom for only a few days before fading away.

For centuries, Native Americans have utilized bloodroot for its medicinal properties, primarily as an anti-inflammatory and pain reliever. The plant contains alkaloids, such as sanguinarine, which have demonstrated antimicrobial properties.

In addition to its medicinal uses, bloodroot is employed in natural dyes due to its red sap, which can serve as a dye or pigment.

It is important to note that bloodroot contains toxic compounds, such as alkaloids, which can cause skin irritation and even death if ingested in large quantities. Therefore, caution should be exercised when handling this plant or using it for medicinal purposes.

A note from PlantMom

Bloodroot exhibits strong disease resistance and is typically not prone to illnesses. However, it can be affected by pests and diseases present in its environment. These issues are usually mild. For care, this plant requires a moderate level of maintenance. It should be pruned regularly to keep a tidy appearance and support healthy growth. Fertilizing can also encourage flowering. Bloodroot is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive care experience. It may need more attention when grown indoors.

— PlantMom
CARE GUIDE

How to keep Sanguinaria Canadensis.

Light

Bloodroot performs best in locations with moderate sunlight, although it can also tolerate complete shade. Excessive sun can harm the plant, while too little light may hinder its vigorous growth. It adapts well to its native woodland habitats where sun-dappled shade is common.

Water

Bloodroot prospers in moist, well-draining soil that holds onto humidity, making weekly watering necessary. This drought-sensitive perennial thrives in shady environments with moderate temperatures, similar to its native North American woodlands. The ideal conditions for bloodroot include dappled sunlight, which supports its growth and hydration requirements.

Humidity

This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.

Temperature

The bloodroot grows in temperate regions and prefers temperatures between 41 and 95 ℉ (5 to 35 ℃). In summer it can tolerate higher heat but may need partial shade to prevent scorching. In winter the plant enters a natural dormancy and can withstand lower temperatures from 20 to 50 ℉ (-7 to 10 ℃).

Fertilizer

For Bloodroot, a single fertilizer application in spring is usually enough, though repeated feedings can boost growth to its fullest. Apply fertilizer every month to every month and a half. Fertilizing improves the leaves’ look and function, helping them maintain even color and a healthy texture. It also encourages root development and better nutrient uptake, supporting the plant’s long-term health.

Pruning

Bloodroot is a perennial plant known for its delicate white flowers and lobed leaves. To encourage growth and control its spread, prune any dead foliage from early to late spring. Additionally, removing spent flowers will promote better health. Regular maintenance helps keep the plant vigorous and tidy. For more detailed guidance, consult resources such as the Royal Horticultural Society.

Pot & Repot

When repotting Bloodroot, choose a pot 1–2 inches (2.5–5.1 cm) larger with ample drainage. Use a well-draining potting mix. Repot in spring or fall, ensuring that the root ball sits slightly lower than the rim of the flower pot. Water thoroughly after repotting and place it in a warm spot with indirect sunlight.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Perennial
Genus
Sanguinaria
Family
Papaveraceae
Hardiness Zone
4-9
Mature Height
20 cm to 49 cm
Mature Spread
6 cm to 15 cm
Leaf Color
Green, Blue
Leaf Type
Deciduous
Flower Color
White
Flower Size
1.52 cm to 3.05 cm
Bloom Time
Early spring, Mid spring
Planting Time
Autumn, Spring
Harvest Time
Late spring, Early summer
ALSO KNOWN AS

Other names.

en Bloodroot en Red puccoon en Redroot en Tetterwort en Bloodwort en Puccoon Root en Puccoon
FREQUENTLY ASKED

Reader questions.

How should I water my Bloodroot plant?

To properly care for the Bloodroot plant, it is important to use filtered water that is at room temperature. Tap water may contain harmful particles, so filtered water is preferred. The plant also prefers room temperature or slightly warmer water, as it is native to warm environments and cold water can be a shock to its system. Avoid overhead watering, as it can cause problems with the foliage. Instead, apply the filtered room temperature water directly to the soil until it is fully soaked. This helps to moisten the roots and supports their growth and nutrient absorption.

Why is it necessary to fertilize my Bloodroot?

Bloodroot is mainly made up of leaves, and fertilization is important for keeping the leaves healthy and serving their purpose. Proper fertilization leads to consistent color and healthy texture in the leaves. Additionally, fertilization benefits the plant below the soil by promoting the growth of new roots and maintaining existing ones. This not only ensures the plant's current health but also helps it absorb nutrients from the soil in the long run.

What are the sunlight requirements for Bloodroot?

Bloodroot requires a balanced approach to sunlight exposure. It thrives best in moderate sun, specifically receiving partial sun, about 3-6 hours of sunlight a day, but can also tolerate full shade conditions, which means less than 3 hours of sunlight. The plant is adaptable to its native woodland settings where it would naturally experience sun-dappled shade. It's important to observe your garden's light patterns to determine the optimal spots for planting, keeping in mind that too much direct sunlight or inadequate exposure can affect the plant's growth and health.

What are the ideal growing conditions for Bloodroot?

Bloodroot thrives in temperate climates and prefers a temperature range of 41 to 95°F (5 to 35°C). During the hotter summer months, it can tolerate higher temperatures but may need partial shade to prevent scorching. When winter arrives, Bloodroot enters a natural dormancy period and endures colder temperatures ranging from 20 to 50°F (-7 to 10°C). Its strong resistance to cold means special frost protection measures are not typically necessary. However, in regions where winter temperatures may dip below the plant's growth limit, it's important to safeguard it using soil or straw coverings. Additionally, watering the plant abundantly before the first freeze helps keep the soil moist and aids in preventing drought and water scarcity through the winter and early spring.

What should I do if I give too much or too little water to my Bloodroot plant?

Overwatering is a more common issue than underwatering for the health of your Bloodroot. When this species is overwatered, its stems and leaves may wilt, turn yellow, and be susceptible to diseases like root rot, mold, and mildew, which can be fatal. On the other hand, while underwatering is less common, it can still happen and result in brittle and brown leaves. It is important to notice the signs of overwatering early on, as some diseases may not be reversible if neglected. To address overwatering, reduce watering immediately and consider the quality of the soil. If the soil drains poorly, replace it with a loose, well-draining potting mix. Conversely, if signs of underwatering are present, increase watering until the signs subside.

When is the right time to add fertilizer to my Bloodroot plant?

Bloodroot, a perennial plant, will send out new growth in early spring if grown outdoors each year. This is the signal to start fertilizing for the year. While a single application of fertilizer may be sufficient for the plant's growth, you can achieve maximum growth by fertilizing multiple times during spring and early summer. If you opt for this approach, you can feed the Bloodroot approximately once every month to a month and a half.

How can artificial lighting benefit Bloodroot grown indoors?

For indoor Bloodroot plants, artificial lighting can be essential, especially when natural sunlight is insufficient. LED lights are recommended because they can be customized to provide the specific light wavelengths needed. The required intensity varies: full sun plants should have 30-50W/sq ft, partial sun plants 20-30W/sq ft, and full shade plants 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant, mimicking natural sunlight for about 8-12 hours a day to promote healthier growth.

How does Bloodroot react to low temperatures and how can you protect it?

Bloodroot is notably cold-tolerant and functions best when the temperature remains above its minimum suitable growth temperature. Throughout the winter, it is essential to keep it above its tolerable growing temperature minimum. If temperatures fall below its growth limit, you might not notice immediate changes, but there could be a reduction or absence of sprouting come spring. To mitigate any potential damage, it is advisable to remove any parts of the plant that fail to sprout in the spring.

How frequently do I need to water my Bloodroot plant?

If you have a potted Bloodroot plant, the best way to determine if it needs water is by inserting your finger into the soil. If the top two to three inches of soil are dry, it's time to water it. The same method can be used for Bloodroot plants planted directly in the ground outdoors. Once again, if the top few inches of soil have dried out, it's time to water. Typically, during spring and early fall, watering once a week should be sufficient. However, during extremely hot weather, you may need to water twice or more per week. It's worth noting that mature, well-established Bloodroot plants can tolerate drought well.

When is it best to not use fertilizer on my Bloodroot?

During late fall and winter, your Bloodroot goes dormant and stops producing new growth. Therefore, it is recommended to avoid fertilizing your Bloodroot during this time. In spring and summer, if you choose to fertilize, gradually decrease your fertilization rate as summer progresses because the growth rate of your Bloodroot will also slow down. It's important to note that it is not advisable to fertilize your Bloodroot when the weather is unusually hot or the soil is excessively dry, as this can stress the plant and lead to premature death.

What are some symptoms of insufficient or excessive sunlight in Bloodroot?

Bloodroot can show various symptoms when the light conditions are not optimal. Insufficient light may lead to smaller leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, and lighter-colored or yellow leaves (chlorosis). Excessive light can cause symptoms such as sunscald, leaf curling, wilting, leaf scorching, and the breakdown of chlorophyll. Monitoring your plant's condition and adjusting its exposure to sunlight or artificial light accordingly can prevent these issues.

What should I do if Bloodroot is exposed to high temperatures?

During the summer, it is crucial to ensure Bloodroot's temperature stays below its maximum suitable growth temperature. If the temperature climbs above its tolerable maximum, the plant's leaves may lighten in color, curl, become susceptible to sunburn, and, in severe cases, the plant may wilt and dry out entirely. To alleviate these issues, trim away the sunburned and dried parts of the plant. Relocate the plant to a partially shaded area, especially shielding it from midday and afternoon sun, or use a shade cloth. Watering the plant in the morning and evening helps maintain soil moisture, further protecting the plant from heat stress.