Xeronema callistemon

Difficulty High Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

1. 1

   Cold moist stratification

   Temperature: 40°F 4°C

   8%, in the fourth week -- it germinates in the cold.

2. 2

   Warm moist stratification

   Temperature: 70°F 21°C

   A further 5%, in the second week.

No stated waiting before sowing. Then 28 days to germinate.

8% germination in 28 days.

8% in the cold and 5% more after the move. Thirteen per cent is the best this one did.

This source doesn't state how long.

1. 1

   Warm moist stratification

   Duration: 90 days · Temperature: 70°F 21°C · Light: dark

   Deno gives no length for this period; three months is his standard cycle.

2. 2

   Cold moist stratification

   Temperature: 40°F 4°C

   Nothing.

about 3 months from start to sowing.

0% germination.

Nothing. Starting warm and in the dark is the wrong way round for this one.

This source doesn't state how long.

1. 1

   Gibberellic acid soak

2. 2

   Warm moist stratification

   Duration: 90 days · Temperature: 70°F 21°C · Light: dark

   Deno gives no length for this period; three months is his standard cycle.

3. 3

   Cold moist stratification

   Temperature: 40°F 4°C

   Nothing.

about 3 months from start to sowing.

0% germination.

Nothing, and GA-3 did not change it.

This source doesn't state how long.