Avocado

Avocado plants grow rapidly from seed, forming a slender tree with large, oval, glossy leaves. They are tender, so are grown as potted houseplants, and will reach 1m (3⅓ft) or more in favourable conditions.

They like warmth, plenty of light, moist compost and high humidity. Stand pots on trays of damp pebbles to create a humid microclimate. Seeds germinate readily in water or moist peat-free compost.

These tender plants dislike low temperatures and are best kept above 13°C (55°F). Mature plants may be more resilient but are not usually frost-proof. They don’t like soggy or very dry compost.

Although avocado plants won’t usually flower or fruit when grown as houseplants, they do add a tropical touch to a bright room and are a fun challenge to grow from seed.