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Habranthus robustus

Habranthus robustus
Growing in our Texas garden, surrounded by partridge peas
Argentine rain lily
Our Pennsylvania potted specimen

Common name Argentine rain lily
Family amaryllidaceae
Life cycle perennial (Z8-10)
Flowers pink (summer)
Size 8-10"
Light sun-part shade
From seed germinate at room temperature
detailed seed-starting info below

In Pennsylvania, I didn't fuss much with tender bulbs, but I made an exception for this one, to see if it would live up to the raves. Grown from seed one year, it overwintered in a pot in our garage, and didn't pose too much trouble. Probably due to its cramped quarters, combined with lack of fertilizing, it didn't make a magnificent display, but I was pleased to see its soft-pink flower appear suddenly one day in early July.
Fast forward a good number of years, and we find ourselves transplanted from Pennsylvania to Texas, where these bulbs are perfectly hardy. I grew a new batch from seed, and was rewarded in the years following with a good number of sturdy plants (they multiply, too). The flowers are somewhat different in form from the ones I'd seen in Pennsylvania, with a floppier (handkerchief-like) habit and pointier petals. Looking at internet photos, there does seem to be a good bit of variability in flower form. They start blooming a little later than many other rain lilies in our garden, but make a nice splash when they're finally ready, typically sometime in May – after which they flower sporadically throughout the warm season. I appreciate the many flowers they throw at me.

Habranthus robustus
Happily living in the rock garden
Argentine rain lily
A few flowers among many seedheads

In our garden, this plant grows in the following areas: right fence border, back fence border, Houston rock garden, foundation border

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Seed-starting details for this plant

  1. Seed from HPS/MAG '05/'06 exchange. Baggy 70F (100%G, 7-12d)
  2. Same seed as above. Baggy 65F (60%G, 6-14d)
  3. Seed from NARGS '17/'18 exchange. Baggy 70F (88%G, 4-10d)
  4. Same seed as above. Baggy 70F (71%G, 5-14d)
  5. Same seed as above. Baggy 70F (55%G, 5-10d)

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Last modified: May 21, 2021
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