One can expect it to be good in zones 8-11, and probably marginal in zones 7A and 7B. Based on past experience, it should be at least as cold and heat tolerant as its parentage. Because it is a new introduction, at this time its cold hardiness and heat tolerance is unknown. They are crinkly like Dino Tree Collards, but much wider and less linear. Leaves can get up to 1 1/2 feet long and are a stunning blue-green color with a hint of pink/purple in the stems. Purple Tree Collards rarely set seed, so they are rare to find for sale. We recommend planting them as you would any other kale or brassica seed. These seeds were harvested in 2021 and germinated over 90 in nursery trials. They turn darker purple tones in cool months and are lighter green in warm months. Tree collards are a perennial collard that can grow 3-12 feet tall, forming a tall shrub with a woody stalk. They can get over eight feet in height and will continue to grow and produce year after year. acephala (aka Purple Tree Kale or Purple Tree Cabbage) are a perennial vegetable related to collard greens. Once Big Blue reaches 2-3 feet in height, it would be best tied to a sturdy stake as it can be top heavy in storms and high winds. Purple Tree Collards, Brassica oleracea var. But cold snaps do happen that push the temperature colder than purple tree collards would like. Within the first year or two, wide stalks 1-2 inches in diameter can form. Big Blue gets between 3 and 8 feet in height, and appears to naturally branch into a mid-sized shrub form. It is a naturally occurring garden hybrid from the Berkeley Farm that appears to be a cross between the Merritt Tree Collard, Dino Tree Collard, and maybe even Purple Tree Collard. One can expect it to be good in zones 8-11, and probably marginal in zones 7A and 7B.īig Blue Tree Collards are a 2020 introduction and extremely limited perennial tree collard. It doesn’t not appear to be a big bloomer which means it is much more productive through the spring than some other tree collards. COLLARDS, Purple Tree Perennial (60 days) Brassica oleracea A unique perennial vegetable that was brought to the USA by enslaved African people and has been. They are smooth like annual collards, but much larger. Leaves can get up to 2 feet long and are a bright to medium green color with lighter stems. Once Jolly Green reaches 2-3 feet in height, it is best tied to a sturdy, metal stake as it can get top heavy in storms and high winds. This incomparable plant grows 6-10 feet tall and up to 3. Within the first year or two, it forms a 1 inch diameter trunk. Purple Tree Collards is just such a plant, offering continuous harvests regardless of the season. It gets between 6 and 10 feet in height, and appears to naturally branch into a large shrub form. It is a naturally occurring garden hybrid from the Berkeley Farm that appears to be a cross between the Merritt Tree Collard, Green Tree Collard, and maybe even Purple Tree Collard. Jolly Green Tree Collard is a 2020 introduction and extremely limited perennial tree collard.
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