Jostaberry plant grow and care – shrub of the genus Ribes also known as Josta berry bush or Jostaberries, Jostaberry perennial deciduous plant can grow in temperate, cold mediterranean or cold subtropical climate and growing in hardiness zone 3-8 and with the right care in hardiness zone 9-10a.
Flower color red the flowers grow in clusters 2-5 flowers.
Jostaberry edible fruits
Fruit edible color black-purple the size 0.5-1.5 cm
How to care: Fertilize once a year, prune once a year, add organic matter
What is the best way to start growing? Plant / Seed (explanation bellow) / Vegetative Reproduction – Suckers or Cutting in the late winter to early spring (possible in green house in other season), moist soil and high humidity better to use root growth hormone, better to use peat soil, for suckers need to separate in the winter and transplant them.
Is it necessary to use vegetative reproduction? Yes, it’s harder to start from seeds
Difficulties or problems when growing: Sensitive to a lot types of pests, thorns
Planting season: Winter, spring possible in the summer but better not, when planting bare roots winter to early spring after this it might die
How to plant: Planting when start in bare root important to cut part of the roots and the plant, put organic matter, humus, dead leaves and mix it with the soil (acid soil), when planting need to increase the amount of water
Pests and diseases: Gall, aphids, spider mite
Pruning season: End of the autumn to beginning of the winter, but if there isn’t a lot of fruits better after the fruits season
How to prune: Prune the week branches and dead, crossing branch, in order to get bigger fruits better to reduce the buds in order to get bigger fruits, old stems, reduce the amount of branches and need to take care that all the fruits will get enough light, branches older than 4 years, not to leave a lot of branches on the plant (not crowded) when the plant crowded fruits less good and get infected easily
Size of the plant: 0.5-1.5 m, 20-60 inches
Growth speed in optimal condition: Fast growing / Medium growing
Water requirement: Average amount of water / Big amount of water
Light conditions in optimal condition for growing: Full Sun / Half Shade
Is it possible to grow as houseplant? No
Growing is also possible in a pot, planter, flowerpot, containers: Yes, in pots need to keep the plants small, start with pot that will be 20-50% more than the root ball, bigger the plant smaller the percentage, every time that the plant arrive to full capacity need to switch to bigger until arrives to desirable size, better to use this method because the soil lose the viability over time and it’s efficient of care for the plant, when the plant big need to switch part of the soil, drainage it’s important and need to make holes and to use peat soil and maybe some lava grit in the bottom or something like that, put a bottom for the container and when water the plant let it fill the bottom but also need to dry in the same day.
Bloom season: Spring
General information about the flower Red flower the flowers grow in clusters 2-5 flowers.
Pollination is done by: Bees
Fruit harvest season: Summer / Autumn
Fruits pests or diseases: Birds
What can be done with big quantities of Jostaberry fruits? Eat raw, juice, cakes, jam
Work requirements on the fruit: Cover with net in massive bird attack
How long does it take to bear fruit? 1-2 years
How to grow Jostaberry plant from seeds
Sowing requirement: High humidity, moist soil, full sun to half shade 10-20C (50-68F)
Saving seeds and care until sowing: Dry and dark place better in refrigerator
Sowing season: End of the winter to spring
Planting spacing: 3*4cm (1.2*1.8 inches) when transplant it better to sow them in different pots it’s easier to follow in control and care for the seedling
Depth of Sowing: Better not to cover just to put on the soil
Conditions for seeds germinate: High humidity, moist soil, full sun, consider when grow in pots to cover with plastic wrap
Watering requires for Seeds: Average amount of water / Big amount of water
Germination time: 2-4 months
Condition of seedling: Full sun, protect the seedling from pests, winds and heavy snow
Do the seeds require burying? Yes
Chilling hour’s requirements: 2-5 Month
Ribes × nidigrolaria
Jostabeere, ribes jostaberry, josta berry plant, Josta berry bush, Jostaberries