10 Types of WHITE Wildflowers in Manitoba! (2023)
Did you find a WHITE wildflower in Manitoba?
If so, I’m sure you’re wondering what type of wildflower you found! Luckily, you can use this guide to help you identify it. 🙂
Please be aware that today I’m ONLY listing and focusing on the most COMMON plants. There are so many species, varieties, and subspecies that it would be impossible to name them all. But if you want to dive deeper into all the white wildflowers in Manitoba, check out this field guide!
Here are 10 different WHITE wildflowers found in Manitoba!
#1. Hoary Alyssum
- Berteroa incana
Also known as: False Hoary Madwort, Hoary Berteroa, Hoary Alison
Growing Information
- USDA Hardiness Zone: 3b-7
- Life Cycle: Biennial
- Approximate Mature Size: 12-24 in (30-61 cm) tall
- Bloom Time: Midsummer
- Sun Exposure: Partial Shade to Full Sun
Hoary Alyssum is an invasive weed that you might find growing in pastures, riverbanks, roadsides, and lawns. Not only does it compete with native plants, but it can also be fatal to horses that eat it.
To identify this white wildflower in Manitoba, look for small white flowers on branching stems.
Each petal is deeply notched, so it might look like there are eight petals instead of four on every flower. The green leaves are covered with gray hairs.
Although bees, wasps, and other insects will eat Hoary Alyssum pollen, you’re better off killing this weed before it takes over your property. It can survive cold winters and hot summers. In addition, it thrives in poor soils and spreads prolifically, making it incredibly difficult to eradicate.
#2. White Clover
- Trifolium repens
Also known as: Dutch Clover, Shamrock, Honeysuckle Grass
Growing Information
- USDA Hardiness Zone: 3-10a
- Life Cycle: Perennial
- Approximate Mature Size: 4-6 in (10-15 cm) tall
- Bloom Time: Spring to Fall
- Sun Exposure: Partial Shade to Full Sun
White Clover is native to Europe and Asia, but this white wildflower is considered a naturalized species in Manitoba. It grows so well that it can take over lawns, roadsides, pastures, and waste areas. Fortunately, however, White Clover doesn’t usually compete with native vegetation!
From spring to fall, White Clover blooms with an abundance of creamy white, rounded flowers. You might be familiar with its green leaves, which typically have three leaflets. But if you find one with four, you can consider yourself lucky! 🙂
Interestingly, all parts of the White Clover are edible. You can use the dried flowers to make tea or the young leaves in a salad. You can also grind the flowers and seed pods to be sprinkled as a seasoning on cooked food. It has a subtle vanilla-like flavor.
#3. Indian Hemp
- Apocynum cannabinum
Also known as: Dogbane, Hemp Dogbane, Prairie Dogbane, Amy Root, Rheumatism Root, Wild Cotton
Growing Information
- USDA Hardiness Zone: 3b-11
- Life Cycle: Perennial
- Approximate Mature Size: 24-60 in (61-152 cm) tall
- Bloom Time: Spring to Summer
- Sun Exposure: Partial Shade to Full Sun
Despite being native to North America, this white wildflower is considered an aggressive weed in Manitoba.
You’ll likely find it in dry, rocky woods, meadows, and prairies. Unfortunately, it also thrives on farms where it’s known to reduce the yield of corn, soybeans, and other crops.
In addition to its invasive nature, all parts of Indian Hemp are highly toxic to humans, dogs, and livestock. Avoid touching the milky sap, which can cause blisters on your skin. Its stiff, reddish stems and bushy lance-shaped leaves will help you identify this plant.
The small white flowers are rich with nectar, so don’t be surprised to see lots of butterflies and moths where Indian Hemp grows.
#4. Yarrow
- Achillea millefolium
Also known as: Bloodwort, Carpenter’s Weed, Devil’s Nettle
Growing Information
- USDA Hardiness Zone: 3-9
- Life Cycle: Perennial
- Approximate Mature Size: 24-36 in (61-91 cm) tall
- Bloom Time: Summer
Planting Yarrow in your garden will reward you with abundant flowers that grow in clusters. They have small feathery leaves that look like ferns, and their scent might remind you of chrysanthemums (mums).
Some Yarrow plants were introduced from Europe in colonial times. However, there are many native subspecies of this white wildflower in Manitoba. Together, they form colorful hybrids that will attract bees, wasps, beetles, moths, and butterflies to your garden.
Yarrow plants naturally occur in disturbed areas, grasslands, open forests, and roadsides. They can tolerate drought and survive in less than perfect conditions.
#5. Catnip
- Nepeta cataria
Also known as: Catswort, Catmint, Field Balm
Growing Information
- USDA Hardiness Zone: 3-9a
- Life Cycle: Perennial
- Approximate Mature Size: 24-36 in (61-91 cm) tall
- Bloom Time: Spring to Fall
- Sun Exposure: Partial Shade to Full Sun
Catnip is a famous plant with a long history of medicinal and culinary uses. Of course, you might know of Catnip as a recreational stimulant for cats. As a member of the Mint family, it has aromatic leaves that can repel mosquitoes, cockroaches, and termites.
Catnip is native to Europe and Asia, but this white wildflower is naturalized in Manitoba.
You can find it growing on roadsides, streams, waste grounds, dry banks, and fields. The triangular, veiny leaves and the small white or purple spotted flowers will help you recognize this plant.
Bees, butterflies, wasps, flies, and many pollinators love the nectar-laden flowers of Catnip. In addition, you can expect goldfinches and other birds to eat the seeds in the fall. Catnip grows best in full sun and well-drained soils.
#6. Cow Parsnip
- Heracleum maximum
Also known as: American Cow-parsnip, American Hogweed, Satan Celery, Indian Celery, Indian Rhubarb
Growing Information
- USDA Hardiness Zone: 4b-10a
- Life Cycle: Biennial or Perennial
- Approximate Mature Size: 47-94 in (119-239 cm) tall
- Bloom Time: Summer
- Sun Exposure: Partial Shade to Full Sun
Cow Parsnip is a relative of the cultivated parsnip. However, this white wildflower in Manitoba is not something you should eat. Be exceeding careful when gardening near this plant! The sap released from its broken leaves can cause blisters on your skin that take months to heal.
Typical of members of the carrot family, Cow Parsnip’s flowers occur in small, white clusters called umbels. The stems are tall and hairy, while the leaves are very large and divided into three lobes. Look for this plant in meadows, streamsides, and moist areas.
Cow Parnsip’s blooms are irresistible for birds and butterflies. The roots are also an important food source for wild animals. Bears are especially fond of them, so be careful of growing this plant in your backyard.
#7. Culver’s Root
- Veronicastrum virginicum
Also known as: Culver’s Physic, Bowman’s Root, Black Root
Growing Information
- USDA Hardiness Zone: 3-8a
- Life Cycle: Perennial
- Approximate Mature Size: 48-84 in (122-213 cm) tall
- Bloom Time: Spring to Summer
- Sun Exposure: Full Sun
Nearly every pollinator is attracted to this white wildflower in Manitoba.
It grows in open woods, moist meadows, and prairies. Bees, butterflies, moths, hummingbirds, and flies are all known to visit its blooms.
It’s no surprise that the beautiful Culver’s Root is a favorite of gardeners and pollinators alike. This popular ornamental plant has tall flowering spikes in white, pink, and purple shades. The vertical clumping shape reminds me of an elegant candelabra!
With its unique shape, Culver’s Root adds vertical interest to borders, rain gardens, or wild gardens. You can grow it in moist, well-drained soil in full sun or partial shade. However, it usually takes several years to establish itself in the garden.
#8. Whorled Milkweed
- Asclepias verticillata
Also known as: Eastern Whorled Milkweed, Horsetail Milkweed
Growing Information
- USDA Hardiness Zone: 4-9a
- Life Cycle: Perennial
- Approximate Mature Size: 12-36 in (30-91 cm) tall
- Bloom Time: Summer
- Sun Exposure: Partial Shade to Full Sun
Whorled Milkweed is a single-stemmed perennial wildflower with flat-topped clusters of 7-20 small flowers. The fragrant white blooms are common in dry prairies, open woods, fields, and roadsides.
If you find this native white wildflower in Manitoba, you’re likely to also see hummingbirds, bees, wasps, butterflies, flies, skippers, and beetles. In addition, it’s an especially important food source for Monarch butterflies and their caterpillars.
Although Whorled Milkweed spreads quickly through underground rhizomes, it’s not considered invasive, so it’s a perfect choice for your garden! It stands well against drought, easily self-seeds, and tolerates most soil types.
#9. Oxeye Daisy
- Leucanthemum vulgare
Also known as: Dog Daisy, Marguerite, White Weed
Growing Information
- USDA Hardiness Zone: 3-8a
- Life Cycle: Perennial
- Approximate Mature Size: 12-24 in (30-61 cm) tall
- Bloom Time: Spring to Summer
- Sun Exposure: Partial Shade to Full Sun
Oxeye Daisy has beautiful white petals surrounding yellow disc-shaped centers. Unfortunately, this wildflower is from Europe and is an invasive species in Manitoba. Its seeds and underground rhizomes spread aggressively, colonizing native ecosystems. Today, you can find it growing in grassy fields, meadows, disturbed sites, and open woodlands.
Although the plant is self-fertilizing, bees, flies, beetles, moths, and butterflies help pollinate the Oxeye Daisy.
#10. Boneset
- Eupatorium perfoliatum
Also known as: Feverwort, Thoroughwort, Sweating-plant
Growing Information
- USDA Hardiness Zone: 3-8a
- Life Cycle: Perennial
- Approximate Mature Size: 48-72 in (122-183 cm) tall
- Bloom Time: Summer to Fall
- Sun Exposure: Partial Shade to Full Sun
Boneset has a cluster of small, fuzzy white flowers above its dense foliage. It has a long blooming season, with flowers appearing continuously from midsummer through fall.
It earned its common names “Feverwort” and “Sweating-plant” from its traditional use of inducing heavy sweating to break a fever. However, despite this plant’s popularity in traditional medicine, it is listed in the Poisonous Plants Database of the US Food and Drug Administration. Therefore, be cautious with holistic medicine products that use Boneset!
This white wildflower is an essential nectar source for many butterfly species in Manitoba. It’s mostly found in low, wet areas such as floodplain forests, marshes, bogs, seeps, and edges of rivers.
Do you want to learn about ALL the wildflowers in Manitoba? Check out this field guide!
Which of these white wildflowers have you seen before in Manitoba?
Leave a comment below!
