A thornless, gooseberry-like harvest with a blackcurrant aroma offers a different experience from separate blackcurrants or gooseberries.
Flavour and use
Gooseberry-sized fruit with blackcurrant notes; sweeter when fully ripe.
Choose a suitable spot
Give the vigorous bush ample space; sun or light shade and moist soil with drainage.
From flower to fruit
RHS describes jostaberry as self-fertile.
How to give the plant a place
Free-standing bush: Allow room for the mature bush. Plant and water during establishment. Remove weak and crossing wood. Taste fruit until sweet enough.
Spacious mixed fruit border: Put josta behind lower currants. Leave picking room along the bush. Mulch without burying the stem base. Thin older branches gradually.
Care throughout the season
An open bush and gradual wood renewal; do not force into an undersized pot.
Recognise the right time to pick
Summer harvest; pick ripe dark fruit carefully.
Follow your own harvest
Record variety identity: Josta is also used as a general trade name.
Turn your space into a garden for experimenting
A berry corner can range from sharp red currants to mild white ones and pronounced blackcurrant flavour. Label cultivars when planting and make the bushes accessible for picking and maintenance. A row of bushes makes it easier to see which cultivar ripens early or later than a tangled mixed hedge. With limited space, choose the intended use first: eating straight from the bush, juice, jam or a combination.
Keep the base of the plant accessible for watering and weed control. A mulch layer can cover the soil, but leave the base of the bush clear. Prune with an understanding of the fruiting wood: blackcurrants are renewed differently from redcurrants and whitecurrants. Gooseberries also have their own bush structure. Do not cut all berry bushes into the same shape simply because they grow together.
Colour is a cultivar characteristic, not a universal ripeness test. A white or green selection will not eventually turn red or black. Compare a ripe berry for juiciness, firmness and aroma. A different balance may suit jam than fresh eating. When tasting, therefore, also note how you used the berry; a sour berry may provide exactly the fresh contrast you want in the kitchen.
Which flavour would you like to discover?
Josta: UPOV: black, medium-sized fruit; later ripening.
Checked on 2026-10-12. This guide was originally written using the listed sources. Growing advice from other countries is not a local weather forecast.