Aphides will pucker and curl the leaves and cause the tips to be twisted. Spraying with a 5 per cent emulsion of a tar-oil wash in December kills the eggs.
Capsid bugs puncture the leaves and shoots, causing the former to be spotted and the latter to be injured. In cases of very bad attack, the top leaves turn a yellowish hue. Prevent this trouble by spraying in February with a D.N.C. and omit the tar oil this season.
Fortunately with black currants it doesn't matter at all about cutting to just above a bud, for there seem to be pin buds which will break out into good growth on almost any part of the old wood. By the way-don't ever summer prune blackcurrants.
It is better not to cultivate in between blackcurrant bushes. I had tried grassing down in contrast to strawing. The disadvantage of this system is that the grass has to be cut fourteen or fifteen times during the summer and autumn and this makes extra work.
In small gardens where it is not desired to use straw, sedge peat could be used to a depth, say, of 2 inches. This would be cleaner, may be easier to obtain, though certainly dearer.
All blackcurrants are self-fertile, but for a good heavy set of flowers one must rely on insect visitors and particularly bumble bees. A sheltered place, therefore, for blackcurrant growing is always advisable. - 15266
Capsid bugs puncture the leaves and shoots, causing the former to be spotted and the latter to be injured. In cases of very bad attack, the top leaves turn a yellowish hue. Prevent this trouble by spraying in February with a D.N.C. and omit the tar oil this season.
Fortunately with black currants it doesn't matter at all about cutting to just above a bud, for there seem to be pin buds which will break out into good growth on almost any part of the old wood. By the way-don't ever summer prune blackcurrants.
It is better not to cultivate in between blackcurrant bushes. I had tried grassing down in contrast to strawing. The disadvantage of this system is that the grass has to be cut fourteen or fifteen times during the summer and autumn and this makes extra work.
In small gardens where it is not desired to use straw, sedge peat could be used to a depth, say, of 2 inches. This would be cleaner, may be easier to obtain, though certainly dearer.
All blackcurrants are self-fertile, but for a good heavy set of flowers one must rely on insect visitors and particularly bumble bees. A sheltered place, therefore, for blackcurrant growing is always advisable. - 15266
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A well drained, moisture retentive soil for fruit trees is needed for growing fruit trees in your garden; black currants respond well to heavy manuring, especially on a light soil.
