How to germinate Antigonon leptopus var. pink

Antigonon leptopus var. pink is a vigorous, fast-growing tropical vine native to Mexico. Seeds have a very hard shell and require scarification and soaking followed by a warm-cold stratification cycle for successful germination.

Before sowing

Scarification

mecanica Gently rub with sandpaper or nick the hard seed coat to allow better water absorption

Stratification

quente_depois_fria · 80 d · 15°C

Soak

24 h Soak scarified seeds in warm water for 24 hours to further soften the seed coat

Alternative protocol: warm room temperature (6 weeks) to break phytohormones, then cold stratification (80 days at 4°C)

Sowing

Substrate

Well-draining potting soil or mix of half potting soil and half sand/perlite/vermiculite

Depth

levemente_coberta

Temperature

25°C

Moisture

media

Container

Seed tray or container, cover with plastic wrap or greenhouse to maintain warmth and moisture

Day/night swing

Requires warm period (room temp) followed by cool period (15-18°C) for successful germination

What to expect

Step 1

Pre-treat the seed

Step 2

Sow at levemente_coberta · 25°C

Day 21–90

Seedlings emerge

Tips

Keep seeds moist during cold stratification. After cold period, return to cool room (15-18°C) to trigger germination. Germination can be erratic and prolonged. Some sources report quicker results (1-6 weeks) with simpler warm water soaking and surface sowing method. This species is invasive in some regions; verify local regulations before planting.

Sources: plantflowerseeds.com, ferriseeds.com, smartseedsemporium.com, whatflower.net, southernplantseeds.com, gardenia.net

Fresh seeds to sow

Antigonon leptopus var. pink

Before sowing

Sowing

What to expect

Tips

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