- Variety Info
- Sowing Info
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Variety Info
Family: Apocynaceae
Native: Brazil and Uruguay
Hardiness: Perennial in USDA zones 10–11; often grown as an annual
Exposure: Full Sun to Part Shade
Bloom Period: Summer
Plant Dimensions: 28" when grown as an annual. In areas where plants are perennial they become a vining shrub, growing to 10' over time.
Variety Info: Aquamarine flowers approximately ½"–1" wide which fade to purple as they age
Attributes: Attracts Pollinators, Cut Flower, Deer Resistant
Sowing Info
When to Sow Outside: 2 to 4 weeks before your average last frost date. Mild Climates: Fall for spring germination.
When to Start Inside: 6 to 8 weeks before your average last frost date.
Days to Emerge: 21 – 28 Days
Seed Depth: ¼"
Seed Spacing: A group of 2 to 3 seeds every 12" – 24"
Thinning: When seedlings have 3 sets of leaves, thin to one every 12" – 24"
Your hardiness zone is
- Leslie O.Verified BuyerRated 4 out of 5 stars9/1/25Tweedia seeds look like Common Milkweed
I ordered a packet of Tweedia seeds and planted them this spring. They've grown lots of foliage so far this year, but no flowers yet. A Monarch Butterfly visited them this morning. And the leaves look like Common Milkweed plants? I'm going to try to transplant them to my new flower garden for next season and see how they do. Hoping to see more Monarchs!
Which best describes you as a gardener? BeginnerBIBotanical Interests9/9/25Hey Leslie,
Thank you so much for taking the time to share your experience. The leaves in the photo do have the wrong shape of leaves for Tweedia milkweed - but those leaves also don't look like other milkweeds; they look a bit like goldenrod (Solidago spp.) There's also a slight chance that it's ironweed (Vernonia fasciculata) - that's a native plant to the central US that has started spreading eastward but isn't found in the west.
If it's goldenrod, it's likely wild in your area and it should bloom soon with yellow flowers - while they usually start blooming in late August, it's still just barely into early September so there's still a chance. Thanks for being patient with them and for creating habitat for our precious pollinators.I've reached out to you via email to offer assistance. Your feedback is invaluable to us, and we are committed to ensuring your experience is positive. Thank you once again for your input. Keep on growing 🌻️
- RobertRated 5 out of 5 stars6/18/245 Stars
Good seed inventory and selection. Very useful tips/ information in packaging. Seeds are good to go. I recommend them
- Zachary B.Verified BuyerRated 2 out of 5 stars5/9/242 Stars
I had such a low germination rate on the seats. It was pretty disappointing, considering I’ve grown them in the past, and had no other problems with other types of milkweed. The price for only 15 seeds and only two seeds that germinated left me pretty disappointed. Love the company and the packaging, but this was, a drag .
Which best describes you as a gardener? Expert - Sarah G.Verified BuyerRated 5 out of 5 stars4/17/245 Stars
Heavenly Blue Tweedia Milkweed for the win! 100 % germination!
Which best describes you as a gardener? Intermediate - Cindy W.Rated 5 out of 5 stars5/23/235 Stars
Love this plant!! The blue flowers look like velvet. Grew these many years ago but could not find the seeds. Found them on your site and ordered them immediately.