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Maurandya barclayana

Purple Snapdragon Vine

Family PlantaginaceaeGenus Maurandya

Three magenta trumpet flowers with white throats, among dark triangular leaves
FlowerSAplantsCC BY-SA 4.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
climbing subshrubPlants of the World Online
Flower
White, pink, purpleWikipedia

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Wikipedia — Wikipedia contributors.

Worth knowing

  • Charles Darwin cites this Mexican climber in The Movements and Habits of Climbing Plants. Since it does not survive frost, in cooler climates it is grown under glass or as a tender annual. It holds the RHS Award of Garden Merit. Wikipedia: Maurandya barclayana

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around February 15, 2027 for a May 3 last frost.

  1. Alternating temperatures

    Temperature: 40–70°F 4–21°C

Germination happens during step 1, in 49 days.

57% germination in 21–49 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asarina p. 23Public domain
Show the original text
Asarina (Scrophulariaceae). A. barclaiana germ. 70L{100% in 2ndw) and less in 70D(37% in 2nd w) and OS(57% in 3-7 w). However, after DS 1 y these differences disappeared and the seeds germ. 100% in 6-12 d in either 70D or 70L.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asarina p. 23. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 14 days to germinate.

37% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Asarina p. 23Public domain
Show the original text
Asarina (Scrophulariaceae). A. barclaiana germ. 70L{100% in 2ndw) and less in 70D(37% in 2nd w) and OS(57% in 3-7 w). However, after DS 1 y these differences disappeared and the seeds germ. 100% in 6-12 d in either 70D or 70L.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Asarina p. 23. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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