Seed Saving in a Humid Climate

Humidity is the enemy, not cold

Every temperate guide tells you to keep seed cool and dry. Here the cool part is impossible and the dry part is the whole battle.

Seed that is not properly dry will mould in storage within weeks, and you will not know until you plant it and nothing comes up.

Dry it much harder than you think

Fully dry means brittle. A bean that dents under a fingernail is not dry. A bean that shatters is.

Sun dry on a tray for several days, bringing it in overnight so it does not pick up dew. Then finish it indoors in front of a fan for another day or two.

Store with a desiccant

An airtight jar with rice, silica gel packets from packaging, or dried charcoal in the bottom. This is the step that makes the difference and it costs nothing.

Glass jars with rubber seals beat plastic bags every time.

Label everything, immediately

Plant name and the month you saved it. Unlabelled seed is a mystery you will throw away in a year.

Test before you rely on it

A hundred seeds on damp paper, counted, checked daily. The germination percentage tells you whether your storage worked and whether to plant thickly.

This is also a genuinely good class investigation with a real number at the end.

What is easy to save here

Beans, corn, chilli, papaya, okra, luffa, marigold, sunflower, coriander.

What is not worth it

Anything from a hybrid seed packet, which will not come true. Most brassicas in a hot climate, which rarely set seed properly. Just buy those.