Milkweed (Swan plant) seeds
CultivateKaurna Country, O'Halloran Hill, South Australia, Australia
$2.90
Gomphocarpus physocarpus
This plant is also called swan or balloon plant.
Monarch butterfly caterpillars exclusively use milkweeds as their food.
Attract some monarchs in your garden with these plants that have stunning foliage and seed pods.
SEED PODS SHOULD BE REMOVED AFTER FLOWERS DROP TO PREVENT THIS SPECIES BECOMING WEEDY.
Sowing instructions:
Only very lightly cover seed, as light helps with germination. Seed germinates best at temperatures above 20°C.
Plant information:
Seedlings emerge 15-30 days after sowing.
Plants grow to 1.8m tall and 1m wide (depending on pruning for shape).
120-130 days to maturity to set flowers and seed pods.
Small plants should be netted during warmer months to prevent them from being eaten prior to being established, mature plants.
Approx 40 seeds in a packet.
20 in stock
Got something to discuss?
Hi there
I have been looking at the photo provided of Asclepias linaria : Pine Needle and the leaf is thicker than the linaria I have seen. Can you assure me of their type please and just to let you know the seeds were under quantity….not by much.
I will carefully grow and let you know if actually Pine Needle Asclepias.
Thank you
Glenyss
Hi Glenyss,
Sorry that I’ve only just seen your message: I don’t appear to have received an alert that you had commented on. I’m sorry about the under quantity seeds: I always double-check my seed packets, but this one must have escaped me. I have sent you an additional pack your way.
Regarding the classification, I have since reclassified it as more likely to be Gomphocarpus physocarpus. Thank you for the heads up.
Kind regards,
Cultivate
Hi I live in Littlehampton SA near Mt Barker
When is the best season to plant cape milkweed seeds please?