Propagating Texas Native Plants: Water Primrose

At least I think this is water primrose or Ludwigia octovalvis. Today the shrubs are about 6 feet tall. They started blooming in April and just refused to stop.

Water primrose is considered an invasive weed in some places. I can see how that might happen. Each seed pod had an unthinkable number of seeds. But the water primrose is a good nectar plant and native to Southern Texas so I feel comfortable in trying to grow one here. I’ve seen it listed as a zone 9 and above plant but I see it recovering each spring at the Mueller pond in Austin (zone 8).

water primrose2
Ludwigia octovalvis

When to sow: I planted the seed in late summer

Special treatment: none

Fresh or dried seed: fresh

Planting depth: Needs light to germinate

Preferred temperature for germination: unknown

Days to germination: 30

Vegetative propagation: Division

 

NOTES:

Daytime temperatures were hot ranging from 75-90. I used ordinary potting soil. Provide winter protection if the temperature dips below 20F.

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8 thoughts on “Propagating Texas Native Plants: Water Primrose

  1. Cough, ahem! (pushes glasses up on nose) Austin is technically zone 8b, which means we are on the warmer side of zone 8 and can thusly get away with a few of the more tender plants, especially when we have a series of milder winters, which we have lately (except for last year). How tall do those water prims get Deb?

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      1. Wow! So what you’ll have going there is a more watery version of the goldeneye sunflowers AND with a longer blooming season to boot. Well planted! (and sorry – I noted you started the post with a remark about how big those get. I pinky swear I read the words and don’t just look at your photos!)

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        1. hahaha everyone skims. I am thinking of trying out some water plants next year. But first, it will have to survive the winter. -fingers crossed-

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  2. Water primrose was banned from being sold over here this year as its an invasive in our waterways. I can see why you like it though especially as its a good nectar producer.

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    1. Yeah. What is a monster in one area can be a good citizen elsewhere. Like the prickly pear cactus is just fine in Texas but a menace in Australia.

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