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  • David Handley, Vegetable/Small Fruit Specialist: "I'm David Handley, vegetable and small fruits

  • specialist for UMaine's Cooperative Extension, and we're here to talk about the basics of

  • growing raspberries, or how this plant works. We'll take a look at the different parts of

  • the plant and what you can expect in terms of how to grow it and when it will fruit for

  • you.

  • "The above ground parts of the raspberry plant--the canes--arebiennial. They live for two years.

  • The first year they come up from buds on the ground, and we call these first-year canes

  • primocanes. It's a green shoot coming right up from the ground, and these will grow to

  • a fairly good height depending on what variety you're growing, anywhere from 4 to 7 feet

  • tall.

  • "As these canes grow, every place a leaf meets the stem, it forms a little bud we call axillary

  • buds. These buds stay on the cane through the first growing season and remain as buds--they'll

  • stay dormant, and if we have a relatively mild winter, it should come through that winter

  • just fine.

  • "This green skin will turn into a brown bark, and in the second year of its life we call

  • it a floricane. It's got brown, peeling bark on it. It's also got little shoots on it,

  • and we call these shooting fruits or shooting laterals. These came from those axillary buds

  • that were formed on the primocane.

  • "In the second year, when the spring comes along and these canes start to grow again,

  • these little buds break and give us little sideshoots with what we call fruiting laterals,

  • and this is where the fruit is going to be born. These will have flowers and little green

  • fruit on them, and in a few weeks we'll be picking some nice red raspberries off these

  • canes.

  • "After the fruit ripens and we've started harvesting, you'll notice these leaves start

  • to turn reddish and yellow, and eventually this cane will die in the late summer or early

  • fall. That's the end of the life for that cane, and next year's crop is coming from

  • this year's group of primocanes.

  • "The exception to the rule is ever-bearing raspberries. The ever-bearing raspberries

  • will form a crop in the late spring or early summertime, and they'll have a second crop

  • in the fall. How they work is that the first-year canes come up just like we saw with the regular

  • varieties of raspberry, and they form buds in the leaf axils.

  • "But the buds at the top of the crown don't grow dormant. They don't wait for the wintertime;

  • they start to fruit right away, and that's where your fall crop comes from. So, your

  • fall crop is on those first-year canes or those primocanes. That's why ever-bearing

  • raspberries are also known as primocane fruiting raspberries.

  • "The buds lower down on the cane will remain dormant, just like a regular raspberry, and

  • those will give you a regular summer crop the following year. So, on ever-bearing raspberries,

  • you get a regular summer crop on the buds low down on the cane, but you'll also get

  • a fall crop on your primocanes on the buds at the top of the cane.

  • "In some 2-year-old canes, here's last year's crop. And here's this year's crop coming on.

  • So, here are our fruiting laterals, with our buds and our flowers, getting ready to give

  • us a summer crop. This is last year's crop on the 2-year cane, so our summer crop and

  • this year's fall crop are going to be coming from these primocanes right here."

David Handley, Vegetable/Small Fruit Specialist: "I'm David Handley, vegetable and small fruits

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B2 crop cane fruit bearing grow dormant

How to Grow Raspberries

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    Furong Lai posted on 2012/12/14
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