
Burweed Marsh Elder
Iva xanthifolia
Grow Time
60-80 days
Sunlight
Full Sun
Watering
Every 5-7 days
Toxicity
Non-toxic
How to plant Burweed Marsh Elder: Step-by-Step Guide
Growing Guide
Preparation
What you'll need:

Burweed Marsh Elder seeds (check with local nurseries or native plant suppliers)

A patch of soil in your garden or a large pot (at least 12 inches deep)

Regular garden soil (no special mix needed, just something that drains well)

Basic gardening tools like a small shovel or trowel

Watering can or hose
When to start:
Burweed Marsh Elder is a hardy plant that thrives in late spring to early summer. If you're starting from seed, it's best to sow them directly into the ground after the last frost when the soil has warmed up a bit. If you live in a warmer region, you can start planting in early spring.
Choosing the right spot:
This plant loves sunlight but can handle some shade too. Find a spot that gets at least 4-6 hours of sunlight daily. It’s also important to pick an area where the soil stays moist — Burweed Marsh Elder likes damp conditions, so if your garden doesn’t naturally stay wet, you may need to water more frequently.
Planting

If you’re planting seeds:
- Clear the area of weeds or debris, so the seeds have room to grow.
- Sprinkle the seeds on top of the soil — no need to bury them too deep; just lightly press them into the surface.
- Water gently to keep the soil moist but not soggy.
- The seeds should germinate within 7-14 days, depending on the temperature and moisture levels.
If you’re transplanting seedlings:
- Dig a hole slightly larger than the root ball of the seedling.
- Place the seedling in the hole, making sure the top of the root ball is level with the surrounding soil.
- Cover the roots with soil and gently pat down around the base.
- Water thoroughly right after planting to help the roots settle in.
Plant spacing:
If you’re planting multiple Burweed Marsh Elders, leave about 18-24 inches between each plant. This gives them enough space to spread out as they grow.
Growing Care




Watering:
- Keep the soil consistently moist, especially during the first few weeks after planting. Since Burweed Marsh Elder prefers damp conditions, don’t let the soil dry out completely.
- In hot weather, you may need to water every other day or even daily if the soil feels dry.
- Always water at the base of the plant to avoid getting the leaves too wet, which could lead to mold or mildew.
Fertilizing:
- You don’t need to fertilize much — this plant is pretty low-maintenance. If you want to give it a boost, use a light, all-purpose fertilizer once or twice during the growing season (spring to early summer).
- Avoid over-fertilizing, as this can cause the plant to grow too quickly without strengthening its roots.
Dealing with pests:
- This plant is pretty tough and doesn’t attract many pests, but if you notice any bugs or chewed leaves, you can spray the plant with a mix of water and mild soap to deter them.
- Check the undersides of leaves for any signs of insects regularly.
Pruning:
- You don’t need to prune much, but if the plant starts looking leggy or overcrowded, you can trim it back a little to encourage bushier growth.
- Prune in early spring before new growth begins.
Harvesting

When to harvest seeds:
- Burweed Marsh Elder produces seeds in late summer to early fall. You’ll know it’s time to harvest when the seed heads turn brown and dry.
- Gently shake the seed heads or pluck them off the plant. Be careful, as the burrs can be prickly!
How to store seeds:
- Once you’ve collected the seeds, let them dry out completely in a cool, dry place.
- Store them in a paper bag or envelope to allow airflow and prevent mold. Label the bag with the date and plant name.
- These seeds can be used for planting next year or shared with fellow gardeners.
Using the plant:
- While Burweed Marsh Elder isn’t typically grown for food or medicinal purposes, it can be a great addition to a wildflower garden or natural landscape.
- Its seeds are sometimes used by birds, so leaving some seed heads on the plant can attract wildlife to your garden.
Plant Care FAQ
Q: Is Burweed Marsh Elder invasive?
A: It can spread easily if not managed, but it’s not considered highly invasive. Regular pruning and removing excess seedlings will keep it under control.
Q: Can I grow Burweed Marsh Elder in a pot?
A: Yes, you can grow it in a large pot, but make sure the container has good drainage and that you water it frequently since pots tend to dry out faster than garden soil.
Q: My plant is wilting, what should I do?
A: Wilting usually means the plant needs more water. Burweed Marsh Elder likes moist soil, so check the soil regularly and water whenever the top inch feels dry.
Q: Does it attract pollinators?
A: Yes! Burweed Marsh Elder flowers attract bees and other pollinators, making it a great choice if you want to support local wildlife.
Q: How tall does it grow?
A: Typically, Burweed Marsh Elder grows about 2-4 feet tall, but it can vary depending on growing conditions. Providing enough space and water will help it reach its full height.
Pro Tips
1. Natural pest deterrent
Plant Burweed Marsh Elder near vegetables to help deter certain pests naturally. Its strong scent can confuse or repel insects that might otherwise bother your crops.2. Attract beneficial insects
Let the flowers bloom to attract pollinators like bees. This can benefit other plants in your garden that rely on pollination.3. Companion planting
Pair this plant with other moisture-loving species, such as asters or goldenrods, to create a beautiful native plant garden.4. Easy seed collection
When collecting seeds, wear gloves! The burrs can be sharp, so protecting your hands makes the process easier.5. Reduce watering stress
Mulching around the base of the plant helps retain soil moisture and reduces how often you need to water.6. Seasonal interest
Even after flowering, the dried seed heads add texture to your garden in fall and winter, so consider leaving some standing for visual appeal.7. Wildlife-friendly garden
Leave some mature plants untrimmed through winter — birds love eating the seeds, and small mammals may use the plant for shelter.