I think God really hit the nail on the head when He made raspberries. How could anything be more delicious? And they are really not hard to grow. Once you have them established it’s easy to develop a big patch and keep them forever and ever, amen.
Raspberries like the edge of the woods, so dappled sunshine is better than shade or blast heat. I find that Purple Emperor, which has more rugose (wrinkly/ridgy ) leaves, seems more tolerant of full sun than Red Heritage, which seems to develop more yellowish leaves and less abundant fruit in those conditions. Purple Emperor has huge purple berries that look incredible on a cake, and bears heavily in June, then no more. I like Red Heritage though, because it has a better flavor and, beyond the two flushes- summer and fall- seems to usually have a few berries on it, even in warm patches of winter. It is a kid magnet beyond compare.
I worked up a rich, fairly well-drained bed for mine years ago and planted them not too deep, as they are subject to crown rot. I put down landscape fabric and mulched them with wood chips, again, not too deep around the canes. I pounded in heavy metal stakes at either end and strung wire at three levels, with turnbuckles to tighten them as the wire stretched. A turnbuckle is a small, inexpensive tightener which you can get at the hardware store. Loop the wire at each end and it will be easy to keep your wires taut. I use the wires to keep the raspberry canes in some kind of order and up off the grass, using quick twists.
In winter I prune the canes to 2-3 feet, weeding and removing dead canes. These canes will produce berries in June. in zone 7. As those canes peter out, new, taller canes will emerge and bloom. I am tying those up right now. After a while the first canes will turn yellow and you will be able to remove them. Notice that established bushes will produce offsets- baby plants that come up short distance from the parent plant. You can dig these up and replant them. The best way to do this, as they are at first not well rooted, is to drive a shovel into the dirt between the parent and child plants without digging it up. This severs the runner and forces the new plant to develop a more independent root system before you dig it up. In any case, plant it in line with the other plants, approximately 2-3 feet from the next bush, and definitely keep it well watered until it is established. This takes longer than you think. You aren’t out of the woods until the fall rains come. But once established, your raspberry bushes will be there for good, barring a serious crown rot epidemic.
Stem borers are a nuisance, as they take out the growing tip, and Japanese beetles eat the leaves. I remove and burn parts of the stem with borers in them, and crush Japanese beetles with my fingers as I see them.
Pick raspberries that are darker pinkish red and pull easily off the cluster. The soft ones are still good but may have lots of little beetles in them. These can be easily blown or rinsed away if you like. If the berry is too squishy I usually toss them somewhere inhospitable. Keep bushes well picked as unpicked bushes encourage beetles and a rotten raspberry is a tragic waste.
I eat them fresh, in a bowl of milk, cream or yoghurt, with granola, scattered in a salad, crushed in a drink over ice, cooked into a jam or a sauce, or made into a syrup that can be canned and diluted into a drink. Today I poured some ginger ale my kids bought into a glass of raspberry flavored plum juice with ice cubes. Yummy.
Raspberry Jam, conventional
Prepare 6 jam jars and boil the lids in water for 15 minutes. Take 4 or 5 c. raspberries and crush them thoroughly with a potato masher. Measure the lovely slop. Boil without lid for 5 minutes. Measure and add an equal amount of sugar. Boil without lid 5 minutes or less if it sheets before that. No need to skim, really. Just don’t let it boil over- big mess! I know it’s a lot of sugar but if you use less it won’t gel so well, and the raspberries are very tart, especially if you pick a few under ripe ones- not white but just a little lighter and firmer.
Don’t bother with seedless raspberry jelly unless you are dealing with a dietary condition like diverticulitis. The pectin is in the seeds, and the crunch is nice. I haven’t even tried making it. I’m guessing you would strain it after boiling 5 minutes, which would give you the pectin.
What is sheeting? My mother had a cookbook that showed a picture of sheeting. Joy of Cooking, I think. Here’s what to do. Stir the cooking jelly or jam with a wooden spoon that has a smooth shape. Scoop up a little and spin the spoon so that the liquid runs around on the spoon and cools a little but doesn’t spill. A few seconds. Then hold the spoon sideways with the edge down in front of you. Watch the drips coming down the face or back of the wooden spoon. Two drips will run down and drip into the pot, sometimes running together at the end. As the jam or jelly begins to jell, the quality of the drip will change, and eventually the two drips will run together in a sort of small sheet, rather than one running into the other. That’s it. Turn off the heat, fill the jars, leaving 1/2 inch headspace, and seal with the clean, boiled lids. Process in an open water bath for 15 minutes. Cool and label. Awesome.
A tarter jam: Now, you can also just sweeten your crushed, cooked raspberries to taste and can them. It won’t gel, but there is enough thickness that it is still useable on toast. It just sort of soaks into the bread more the less sugar you use.That is more to my husband’s taste, You can also make a syrup of raspberries and sieve out the seeds, and can that. Easy, if you know how to can. Or you can just put it in the refrigerator and eat it before mold sets in. Awesome.
What I don’t know about: I haven’t used honey because I love to eat all my honey, which has such a delicate flavor. Also sugar interferes less with the taste of the berries. I know sugar is death, but we use it so rarely, and we try to afford the raw sugar in bulk. I just want to put all my prejudices aside and show gratitude for the berries by making sure we have them all year! I haven’t tried yellow raspberries. They say they are less attractive to birds. I don’t have a bird problem so far knock on wood. My experience with pigment lacking fruits and vegetables is that they are sweeter because they lack a counterbalancing strong flavor. This isn’t all bad- white sweet potatoes are heavenly- sugar sweet and delicate, almost vanilla. White tomatoes are subacid and very sweet- highly attractive to bugs, I found. White peaches are very pretty and slightly more delicate tasting. I don’t remember if I’ve tasted a yellow raspberry, but I am suspicious that they would lack oomph. I’ll let you know when I do. But remember I am of Virginian descent, and you know how many Virginians it takes to change a lightbulb.