Havard Agave
One of the most cold hardy agaves, Havard Agave can survive temperatures well below zero, reportedly all the way to -20, though it would still very much prefer to be dry when it gets cold. Rosettes are medium to large sized, quite upright and strikingly blue. It really has quite the presence in the garden! Produces pups, sometimes a good distance away and these can be allowed to grow where they appear or dug up and moved wherever you want a new agave. Flower stalks whenever it reaches the end of its life are incredible!
Plant in extremely well draining soil in the brightest conditions if planting in ground. Watering in the summertime will lead to faster growth and a large specimen. Otherwise it makes a fantastic container plant and can be brought indoors when very cold weather is in the forecast.
Latin Name: Agave havardiana
Site and Soil: Full sun and very well-drained soil. Very drought tolerant once established and will need little to no supplemental watering during the summer season, though a bit of summer water speeds growth.
Hardiness: Hardy to approx. -20º F so long as drainage is good and there is minimal winter moisture.
Color: Glaucous blue
Size at Maturity: 36 inches in height by 36 inches wide
Bloom Time: Early spring through summer every 10-20 years or so
Pests & Diseases: Not bothered by pests or diseases.
USDA Zone: 5-11