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Home » Best Companion Plants For Milkweed: What to plant with milkweed

Best Companion Plants For Milkweed: What to plant with milkweed

what to plant with milkweed

What to plant with milkweed


Milkweed is a very important plant for the survival of the monarch butterfly. Each milkweed plant needs to be paired with another in order to produce enough food for the butterflies. Milkweed plants need to be planted in a sunny area in early spring so that they have enough time to flower and produce food. Asclepias Viridis (spider milkweed) is spring-blooming milkweed with thicker leaves that a hungry cat can appreciate. Pair early-blooming milkweed with a late one so that you have flowers all season long!

Types of milkweed:

There are many types of milkweed, but only three are good choices for gardens. These include common milkweed (A. syriaca), butterfly weed (A. tuberosa), and tropical milkweed (Asclepias curassavica). All of these plants are easy to grow and have a variety of benefits for the environment and for monarch butterflies.

Flower characteristics:

Milkweed flowers are designed to attract bees. The flowers have a sweet smell and are bright orange or yellow in color. They are also very small, making them difficult to see from a distance. Seed pods split open in fall and release hundreds of seeds. Plants flower again about a month later if you remove the seed pods. To get milkweed to flower again, clip the whole flower stem back to the first set of leaves below the flower stem.


The average length of a snake ranges from 1-3 ft, depending on the species. They can be as short as 2 ft or as long as 3 ft.


3 – 5 Zone


Butterflies are beautiful creatures that often attract people. They are also frequent visitors to gardens, as they are drawn to the colors and scents of flowers. If you want to attract butterflies to your garden, there are a few things you can do. First, plant a variety of flowers that will appeal to different types of butterflies. Second, provide a water source for them to drink from. Third, make sure your garden is free of pesticides and other chemicals.


Milkweed is a great plant to have in your garden because it is easy to grow and it attracts butterflies. There are different types of milkweed, including the easy-growing common milkweed and the butterfly weed. The process of growing milkweed is natural for the plant nature.

Where to plant:

Milkweed plants need at least 6-8 hours of direct sunlight in order to grow and bloom properly. They also have deep taproots, so they do not transplant well. For these reasons, it is best to plant milkweed at the back of the border or in a corner where it will not spread its seeds too far and will provide a hospitable environment for butterflies and other pollinators.

When to plant:

Planting in the fall is important because the plants will have time to germinate and grow before the frost comes. If you plant in the spring, the seeds will germinate, but they may not survive the cold weather. Starter plants should be planted in the spring after all danger of frost has passed.


There are a variety of factors to consider when planting milkweed, one of which is the type of soil. Different plants thrive in different types of soil, so it’s important to know what the soil type is before planting. For milkweed, there are two main types of soil: garden soil and swamp milkweed soil. Garden soil is more common and can be found in most yards. It is a well-drained, loamy soil that is good for most plants. Swamp milkweed requires moist and humus-rich soil for best growth. It can be found in wet areas such as marshes, swamps, and bogs.

How to plant:

When planting, you will want to make sure the soil is smooth and free of clumps. This will help the seedlings establish themselves in the ground. Once they have germinated, you will need to compact them into the soil by applying light pressure with your hands. If there are too many plants in close proximity to each other, you will need to thin them out so that they do not compete for sun and soil nutrients.


When planting milkweed, it is important to space the plants properly in order to ensure they grow and thrive. Planting them too close together can result in competition for resources while spacing them too far apart can lead to poor growth and low seed production. Ideally, milkweed should be planted in groups of 6 or more, with seedlings being spaced to about 6-24 inches apart. For best results, 18-24 inches should be left between each group of plants.


Propagating plants can be done in a number of ways, but one of the most common is taking root or rhizome cuttings. This can be done during the late fall or early spring when the plant is dormant. Once you have taken your cuttings, new sprouts will form when the weather warms up and flowers will usually be produced in the first year.

Best Companion Plants for Milkweed

Verbena Bonariensis

Verbena Bonariensis is a tall, spiky purple flower that can grow up to 6′ tall. It branches out into many prongs and blooms throughout the summer. They are very easy to care for and can be planted anywhere without blocking sunlight from other plants. You can find more information about verbena here.

Verbenas are a type of plant that is see-through and can be found in many gardens. Milkweed is a weed that grows easily from seed, and it is important to buy the milkweed plant in a pot so you can transplant it to your garden before the rainy season. The fall is the best time to sow the seeds for milkweed.

Blue Tweedia

Blue Tweedia is a unique flower that can be found in a variety of colors, including Magenta, Velvet, Sky Blue, and Purple. What makes this flower unique is the blue hue that its leaves exhibit. This blue color is not found on any other plant and is attractive to Monarch butterflies.

Blue Tweedia and Dwarf Butterfly Bush are two beautiful companions that grow well in containers. You can find Blue Flowered Milkweed on our Butterfly Flowers Page. It is easy to care for and a favorite of gardeners and butterflies alike.

Purple Salvia

If you’re looking for a beautiful flower combination, try purple and orange. These two colors blend together perfectly and can really make a statement in your garden. If you’re interested in trying this combo out, we recommend using Salvia nemorosa ‘cardonna’, which is dark purple salvia. If you like hummingbirds, black and blue would make a great companion. You can find Butterfly Weed Plants or Seeds here.

There are a few different options for purple salvia plants. Some good choices include ‘Royal Blue’ and ‘Caradonna’. For milkweed, swamp milkweed is a good option as it is a clump-forming plant that will spread less than other milkweed species.


Mistflower, or Eupatorium coelestinum, is a hybrid plant that is not widely available. However, wild ageratum, or Eupatorium purpureum, is a better option for monarchs in the northern regions of the United States. In our region (southern California), mistflower come back by seed and flowers all season. There are three milkweed varieties that are native to the 3 to 5 zone.

Butterfly Weed

Milkweed is a valuable plant for both caterpillars and adult butterflies. The plants serve as the host plants for caterpillars and provide a nectar source for butterflies. There are several types of milkweed, but the two most common are butterfly weed (Aesclepias tuberosa) and tropical milkweed (Asclepias curassavica). Butterfly weed is an annual that can be grown in pots and moved around, while tropical milkweed is a perennial that should be planted in the ground.

Swamp Milkweed

Swamp milkweed is a white flower that grows shorter than the regular variety. It thrives in full sun and is a good choice for gardens in most regions of the country. There are three species of milkweed that are good all-around choices for gardens: Common milkweed, Swamopwee, and Butterfly Weed.

Whorled Milkweed

There are a variety of milkweed plants that can be planted to help support the monarch butterfly population. One great option is to pair early-blooming milkweed with a late one. For example, spider and whorled milkweed are two great options for the eastern part of the United States. Spider milkweed blooms in late spring/early summer, while whorled milkweed blooms in mid-summer. Additionally, both of these plants have been purchased by Monarch Joint Venture as part of their efforts to help conserve monarchs. Another great option is common or swamp milkweed, which is both found in the Northeast and Midwest parts of the United States.

Mammoth Sunflowers

Mammoth sunflowers are an eye-catching addition to any garden with their dark green leaves and vibrant yellow sunflowers. They are perennial plants, so if you live in a perennial zone, you may want to experiment with the placement of plants. Milkweed is a companion plant for milkweed and can be combined with other plants such as perennials, coneflower, and bee balm.

Does milkweed kill other plants?

Milkweed kills other plants by exuding a sticky white substance from the stem and leaves. This substance, called latex, is toxic to most plants and can cause them to wilt or die if the plant is coated with it.

Where not to plant milkweed?

Milkweed is a plant that looks like a daisy, has white flowers, and can be found in many parts of the United States. It serves as an important source of food for monarch butterflies.

But milkweed doesn’t make the best garden plant because it can be invasive and will take over your whole yard if you’re not careful.

Is milkweed safe around dogs?

Milkweed is a poisonous plant that can be found growing in and around the yard. It contains powerful neurotoxins that can cause symptoms ranging from mild to fatal, so it’s important to know whether it is safe to have your dog around.

The answer to this question will depend on the specific plant and the size of your dog, but generally speaking, milkweed can be safely left to grow in your yard.

What can I plant next to milkweed?

Milkweed is a plant that is not only beneficial to monarch butterflies but also provides habitat and food for other creatures. You can plant milkweed near your garden or in your yard. Other plants that are beneficial to monarch butterflies and can be planted near milkweed include black-eyed Susan flowers, creeping phlox, daylilies, butterfly weed, and passionflower.

Where is the best place to plant milkweed plants?

The best place to plant milkweed plants is in the early spring when you have a window of opportunity. The ideal time to plant them is between March and June. Milkweed plants need a lot of sunlight and moist, well-drained soil to grow.

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