Overwintering Eucomis, also known as pineapple lilies, can be a bit tricky, especially if you live in a colder climate. These exotic bulbs are native to South Africa and are not very cold hardy. However, with some proper care and protection, you can successfully overwinter them and enjoy their beautiful blooms year after year.
One of the most common methods of overwintering Eucomis is by lifting the bulbs and storing them indoors. To do this, wait until the foliage starts to yellow and die back naturally. This usually occurs in late fall or early winter, depending on your climate. Gently dig up the bulbs, being careful not to damage them, and shake off any excess soil.
After lifting the bulbs, it's important to dry them off before storing them. Lay them out in a single layer on a tray or newspaper in a cool, dry place for a few days. This will allow any excess moisture to evaporate and help prevent rot during storage.
Once the bulbs are dry, you can store them in a frost-free place, such as a greenhouse, shed, or basement. Ideally, the temperature should be around 50-55°F (10-13°C). You can place the bulbs in a cardboard box or paper bag with some dry peat moss or vermiculite to help absorb any remaining moisture and provide insulation.
Another option for overwintering Eucomis is to protect them in the garden. If you choose to go this route, it's important to provide them with some extra insulation to protect them from freezing temperatures. One method is to apply a layer of dry mulch, such as bark or leafmould, around the bulbs. Aim for a thickness of about 10cm (4in) to provide adequate protection.
Alternatively, you can also use a layer of straw or hay to cover the bulbs. This will help insulate them and prevent frost damage. Be sure to remove the mulch or straw in early spring when the danger of frost has passed and new growth begins to emerge.
In addition to protecting the bulbs from frost, it's also important to consider the moisture levels during winter. Eucomis bulbs are susceptible to rot if they are kept too wet during dormancy. Make sure the storage area is well-ventilated and not prone to excess moisture. Check the bulbs periodically during winter to ensure they are not becoming too dry or too damp.
Personal experience: I have successfully overwintered Eucomis bulbs in my garden by using a combination of both methods. I lifted some of the more tender varieties and stored them in my basement, while others I protected in the garden with a layer of mulch. Both methods have worked well for me, and I have been able to enjoy the stunning blooms of Eucomis year after year.
To summarize, overwintering Eucomis bulbs involves either lifting and storing them indoors or protecting them in the garden with a layer of mulch or straw. It's important to allow the foliage to naturally die back before lifting the bulbs and to dry them off before storage. Proper insulation and moisture control are key to successfully overwintering these exotic bulbs.