What are half hardy annuals?
Half hardy annuals can be sown outside in late April to early May or under glass before then as long as the temperature is above 15 degrees Centigrade. If sown early under glass they must be pricked out and hardened off before planting out in May
Examples of half hardy annuals are
- Cosmos
- Nicotiana
- Tagetes
- Zinnia
- Amaranthus
- Helianthus
- Statice
- Dahlias
What are tender annuals
The difference between half hardy and tender annuals is defined differently in different countries. This cab mean that some plants can be in one group in one country and in a different group in another. The traditional definition in the UK is that tender annuals must always be germinated in the greenhouse
Examples of tender annuals are
- Ageratum
- Begonia
- Cleome
- Zinnia