Many gardeners appreciate the attractive appearance of the various types of agave. However, some also shy away from the work and risk of injury associated with overwintering non-hardy agaves, although there are also some species that are quite frost-hardy.
What tips are there for overwintering agaves outside?
To overwinter agaves outside, plant frost-hardy species such as Agave utahensis, Agave parryi or Agave inaequidens, which can tolerate temperatures down to -20°C. Protect sensitive species with coniferous twigs and ensure there is a drainage layer to avoid waterlogging.
Planting frost-tolerant agaves in the garden
Many types of agave only survive frost in the single-digit minus temperature range and for a very limited time. But there are also agave species that can survive cooler temperatures due to their origins in cool mountain areas. While the common Agave americana can survive temperatures down to around minus 10 degrees Celsius outdoors, the following species can also withstand temperatures down to minus 20 degrees Celsius at times:
- Agave utahensis
- Agave parryi
- Agave inaequidens
In mild locations, sensitive specimens can also be covered with the brushwood of various conifers to protect them from frost.
Moisture is an important factor when wintering
Dying leaves on agave are not necessarily an indication of disease, but are often more of a sign of errors in care. If agaves die during or after winter, this may be due to signs of rot due to excessive moisture in the location. You should prevent this with a drainage layer (€9.00 on Amazon) made of gravel and sand in the bed or pot.
Tip
When overwintering outdoors, water collecting on the leaf rosettes can be a problem. On slopes, it is advisable to plant the agaves at a slight angle so that the water can drain away automatically.