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Japanese plum
Plant Care Instructions By Steve Brigham

In coastal Southern California, it is important to choose plum trees with a low chilling requirement. A number of Japanese Plum varieties generally fruit well in this climate, and some are even self-fruitful (others need a different variety for pollination). Since fruit is formed on year-old wood, it is often recommended to prune these vigorous trees in the late spring or early summer (rather than in winter), especially if you are pruning to control the size of the tree.

Is Indoor Plant?

No

These month by month plant care tasks are for plants in the following zones :
Sunset Zones : 22, 23, 24
USDA Zones :
Web Link - For more information
Scroll down or click on any month for plant care instructions
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
  • January
    • Buy

        Buy bare-root trees from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

    • Treat for Pest/Disease

        If pests or fungal diseases have been a problem, spray trees this month with a dormant spray that combines horticultural oil with lime sulfur.

  • February
    • Buy

        Buy bare-root trees from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

  • March
    • Buy

        Buy established trees in containers from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

    • Fertilize

        Fertilize with a balanced plant food such as 10-10-10.

    • Mulch

        Mulch to conserve water use.

  • April
    • Buy

        Buy established trees in containers from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

    • Water

        Water trees regularly during the growing season, but do not over-water.

  • May
    • Water

        Water trees regularly during the growing season, but do not over-water.

    • Prune

        If crop is heavy, thin fruit as it forms to 4-6" apart on the branches. Prune to control size and branch structure when you thin fruit.

  • June
    • Water

        Water trees regularly during the growing season, but do not over-water.

    • Prune

        If crop is heavy, thin fruit as it forms to 4-6" apart on the branches. Prune to control size and branch structure when you thin fruit.

    • Mulch

        Mulch to conserve water use.

    • Protect

        Protect ripening fruit from birds with netting, if necessary.

    • Harvest

        Harvest plums when they are fully ripe and sweet.

  • July
    • Water

        Water trees regularly during the growing season, but do not over-water.

    • Prune

        If you haven't already done so, prune trees to control size and branch structure.

    • Protect

        Protect ripening fruit from birds with netting, if necessary.

    • Harvest

        Harvest plums when they are fully ripe and sweet.

  • August
    • Fertilize

        Fertilize with a balanced plant food such as 10-10-10.

    • Water

        Water trees regularly during the growing season, but do not over-water.

    • Protect

        Protect ripening fruit from birds with netting, if necessary.

    • Harvest

        Harvest plums when they are fully ripe and sweet.

  • September
    • Water

        Water trees regularly during the growing season, but do not over-water.

    • Mulch

        Mulch to conserve water use.

  • October
    • Buy

        Buy established trees in containers from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

    • Water

        Water trees regularly during the growing season, but do not over-water.

  • November
    • Buy

        Buy established trees in containers from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

  • December
    • Buy

        Buy established trees in containers from a reputable source to get the varieties you want.

    • Plant

        Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

  • Winter
    • Spring
      • Summer
        • Fall
          • Buy

            When's the best time to buy this plant? When can you buy these from seed (if you can)? When is it usually available? What are things to look for when you're buying it? Or anything other tidbit of information you can share!

            •  Jan
            •  Feb
            •  Mar
            •  Apr
            •  May
            •  Jun
            •  Jul
            •  Aug
            •  Sep
            •  Oct
            •  Nov
            •  Dec
            • January

              Buy bare-root trees from a reputable source to get the varieties you want.

            • February

              Buy bare-root trees from a reputable source to get the varieties you want.

            • March

              Buy established trees in containers from a reputable source to get the varieties you want.

            • April

              Buy established trees in containers from a reputable source to get the varieties you want.

            • October

              Buy established trees in containers from a reputable source to get the varieties you want.

            • November

              Buy established trees in containers from a reputable source to get the varieties you want.

            • December

              Buy established trees in containers from a reputable source to get the varieties you want.

          • Plant

            When's a good time to plant this plant or bulb? Any special planting instructions?

            •  Jan
            •  Feb
            •  Mar
            •  Apr
            •  May
            •  Jun
            •  Jul
            •  Aug
            •  Sep
            •  Oct
            •  Nov
            •  Dec
            • January

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

            • February

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

            • March

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

            • April

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

            • October

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

            • November

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

            • December

              Plant bare-root trees immediately after you get them, or container trees anytime, in full sun in well-drained soil in a location with good air circulation and as much winter chilling as possible.

          • Sow Seeds

            When can you plant these seeds? When's the best time? Can you start them indoors and move them out? Do they have any special requirements?

            •  Jan
            •  Feb
            •  Mar
            •  Apr
            •  May
            •  Jun
            •  Jul
            •  Aug
            •  Sep
            •  Oct
            •  Nov
            •  Dec
            • Fertilize

              When should you fertilize this plant? Which kind of fertilizer do you recommend? Should you use different fertilizers at different times of year?

              •  Jan
              •  Feb
              •  Mar
              •  Apr
              •  May
              •  Jun
              •  Jul
              •  Aug
              •  Sep
              •  Oct
              •  Nov
              •  Dec
              • March

                Fertilize with a balanced plant food such as 10-10-10.

              • August

                Fertilize with a balanced plant food such as 10-10-10.

            • Water

              Is there a time to reduce or increase watering? Any special requirements? Things to avoid during certain times of the year?

              •  Jan
              •  Feb
              •  Mar
              •  Apr
              •  May
              •  Jun
              •  Jul
              •  Aug
              •  Sep
              •  Oct
              •  Nov
              •  Dec
              • April

                Water trees regularly during the growing season, but do not over-water.

              • May

                Water trees regularly during the growing season, but do not over-water.

              • June

                Water trees regularly during the growing season, but do not over-water.

              • July

                Water trees regularly during the growing season, but do not over-water.

              • August

                Water trees regularly during the growing season, but do not over-water.

              • September

                Water trees regularly during the growing season, but do not over-water.

              • October

                Water trees regularly during the growing season, but do not over-water.

            • Prune

              When's a good time to prune this plant? How about deadheading, pinching back, trimming or any other grooming? Any special requirements?

              •  Jan
              •  Feb
              •  Mar
              •  Apr
              •  May
              •  Jun
              •  Jul
              •  Aug
              •  Sep
              •  Oct
              •  Nov
              •  Dec
              • May

                If crop is heavy, thin fruit as it forms to 4-6\" apart on the branches. Prune to control size and branch structure when you thin fruit.

              • June

                If crop is heavy, thin fruit as it forms to 4-6\" apart on the branches. Prune to control size and branch structure when you thin fruit.

              • July

                If you haven\'t already done so, prune trees to control size and branch structure.

            • Mulch

              Does this plant need to be mulched? Are there specific types of Mulch which are better for this plant? How much?

              •  Jan
              •  Feb
              •  Mar
              •  Apr
              •  May
              •  Jun
              •  Jul
              •  Aug
              •  Sep
              •  Oct
              •  Nov
              •  Dec
              • March

                Mulch to conserve water use.

              • June

                Mulch to conserve water use.

              • September

                Mulch to conserve water use.

            • Protect

              When and how should you protect this plant from birds, deer, rabbits? Does this plant need be covered, or wrapped or painted or moved?

              •  Jan
              •  Feb
              •  Mar
              •  Apr
              •  May
              •  Jun
              •  Jul
              •  Aug
              •  Sep
              •  Oct
              •  Nov
              •  Dec
              • June

                Protect ripening fruit from birds with netting, if necessary.

              • July

                Protect ripening fruit from birds with netting, if necessary.

              • August

                Protect ripening fruit from birds with netting, if necessary.

            • Pest/Disease Inspection

              What are the common problems this plant will face and when should you look for them to appear?

              •  Jan
              •  Feb
              •  Mar
              •  Apr
              •  May
              •  Jun
              •  Jul
              •  Aug
              •  Sep
              •  Oct
              •  Nov
              •  Dec
              • Treat for Pest/Disease

                How do you treat the common problems for this plant? What products or concoctions or natural means do you use? Any special requirements?

                •  Jan
                •  Feb
                •  Mar
                •  Apr
                •  May
                •  Jun
                •  Jul
                •  Aug
                •  Sep
                •  Oct
                •  Nov
                •  Dec
                • January

                  If pests or fungal diseases have been a problem, spray trees this month with a dormant spray that combines horticultural oil with lime sulfur.

              • Transplant

                When's the best time to dig up and transplant this from one spot to another? (This is different than planting). Any special requirements?

                •  Jan
                •  Feb
                •  Mar
                •  Apr
                •  May
                •  Jun
                •  Jul
                •  Aug
                •  Sep
                •  Oct
                •  Nov
                •  Dec
                • Propagate

                  When's a good time to divide, take cuttings, layer or propagate this plant. Any special requirements?

                  •  Jan
                  •  Feb
                  •  Mar
                  •  Apr
                  •  May
                  •  Jun
                  •  Jul
                  •  Aug
                  •  Sep
                  •  Oct
                  •  Nov
                  •  Dec
                  • Harvest

                    When's a good time to harvest this plant? What's the best way to harvest? Are there special requirements or features?

                    •  Jan
                    •  Feb
                    •  Mar
                    •  Apr
                    •  May
                    •  Jun
                    •  Jul
                    •  Aug
                    •  Sep
                    •  Oct
                    •  Nov
                    •  Dec
                    • June

                      Harvest plums when they are fully ripe and sweet.

                    • July

                      Harvest plums when they are fully ripe and sweet.

                    • August

                      Harvest plums when they are fully ripe and sweet.

                  • Special requirements

                    Any other requirement for this plant? Is there anything that doesn't fit into the other care categories?

                    •  Jan
                    •  Feb
                    •  Mar
                    •  Apr
                    •  May
                    •  Jun
                    •  Jul
                    •  Aug
                    •  Sep
                    •  Oct
                    •  Nov
                    •  Dec

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