Garden Care Guide

Mountain Pine Care

Pinus mugo

An evergreen pine native to the high mountains of Europe, usually dwarf and spreading in form. It is popular for rock gardens. It loves full sun and well-drained soils but is not suitable for the hot, dry Mediterranean climate; under these conditions it becomes very susceptible to spider mites and fungal diseases.

Hardy · -30 °C / -22 °F

Monthly care calendar

Timings are for a temperate Northern Hemisphere climate. In warmer areas tasks start earlier, in colder areas later; in the Southern Hemisphere shift them by six months.

January
  • Watering: Not required; winter precipitation is sufficient.
  • Pruning: Not needed. Pruning is done in spring.
  • Plant protection: If symptoms spread and treatment is needed, consult a licensed plant-protection supplier or an agronomist. Plant protection products are regulated; follow local rules.
  • General care: Dormancy period.
  • Pests & diseases: Look for white, cottony pouches on branch tips (pine bagworm). DO NOT TOUCH THE POUCHES OR CATERPILLARS WITH BARE HANDS; their hairs cause serious allergies and skin irritation.
February
  • Pruning: It does not need formative pruning and its top should not be cut. Only remove dry, broken, and diseased branches. If you want to make it denser, snap the new shoots (candles) in half by hand in spring; cutting with shears turns the needle tips brown.
  • Plant protection: If symptoms spread and treatment is needed, consult a licensed plant-protection supplier or an agronomist. Plant protection products are regulated; follow local rules.
  • General care: Rest period continues.
  • Pests & diseases: Look for white, cottony pouches on branch tips (pine bagworm). DO NOT TOUCH THE POUCHES OR CATERPILLARS WITH BARE HANDS; their hairs cause serious allergies and skin irritation.
March
  • Watering: Water a newly planted specimen more often than established plants during its first year, as its root system is still shallow.
  • Fertilizing: Not required, it prefers poor soils. If absolutely necessary, a slow-release balanced fertilizer, 20-30 g/m² of soil, do not overfeed.
  • General care: Good time for planting and transplanting.
  • Pests & diseases: The pine shoot moth can damage new shoots.
April
  • Watering: Water a newly planted specimen more often than established plants during its first year, as its root system is still shallow.
  • Plant protection: Start watching for spider mites (Tetranychidae).
  • General care: Good time for planting and transplanting.
May
  • Watering: 30-40 L/m² per week; regular watering is important in preparation for the hot months.
  • Pruning: To keep the plant compact, pinch new shoots ('candles') by about half before the needles open (known as candling).
  • Plant protection: If spider mites appear, apply a miticide or blast the leaves with pressurized water.
  • General care: This is the best time for candle pruning (pinching back the new shoot 'candles' by hand). Do not use shears; cut needles bleed resin.
June
  • Watering: In a long drought, water deeply once a month.
  • Pruning: The pruning period has passed.
  • Plant protection: The spider mite population explodes in hot, dry weather; control is critical.
  • General care: Keep the soil cool and moist.
  • Pests & diseases: Yellowing and webbing on the needles are a clear sign of a spider mite infestation. On stressed plants, needle cast diseases (Dothistroma needle blight) may be seen.
July
  • Watering: In midsummer, deep watering every 15-20 days is enough. Established plants (over 2 years old) do not need watering in most years. The root zone should be wetted to a depth of 30-40 cm.
  • Plant protection: Continue controlling spider mites.
  • General care: This is the period of most intense stress.
August
  • Watering: In midsummer, deep watering every 15-20 days is enough. Established plants (over 2 years old) do not need watering in most years. The root zone should be wetted to a depth of 30-40 cm.
  • Plant protection: Continue controlling spider mites.
September
  • Watering: In a long drought, water deeply once a month.
  • Plant protection: Continue intensive monitoring and control of spider mites (Tetranychidae).
  • General care: Cooling weather gives the plant a bit of a breather.
  • Pests & diseases: Yellowing and webbing on the needles are signs of spider mites. Needle drop between the branches can be a fungal disease.
October
  • Watering: Water a newly planted specimen more often than established plants during its first year, as its root system is still shallow.
  • General care: Good time for planting and transplanting.
November
  • Plant protection: If symptoms spread and treatment is needed, consult a licensed plant-protection supplier or an agronomist. Plant protection products are regulated; follow local rules.
  • General care: Enters dormancy.
  • Pests & diseases: Look for white, cottony pouches on branch tips (pine bagworm). DO NOT TOUCH THE POUCHES OR CATERPILLARS WITH BARE HANDS; their hairs cause serious allergies and skin irritation.
December
  • Plant protection: If symptoms spread and treatment is needed, consult a licensed plant-protection supplier or an agronomist. Plant protection products are regulated; follow local rules.
  • General care: Evergreen leaves continue to lose water in winter. Water thoroughly once before the soil freezes.
  • Pests & diseases: Look for white, cottony pouches on branch tips (pine bagworm). DO NOT TOUCH THE POUCHES OR CATERPILLARS WITH BARE HANDS; their hairs cause serious allergies and skin irritation.

The care advice on this page is general and for information only; it is not professional advice. Plant age, soil and your garden’s microclimate can change the outcome. Plant protection products are mentioned only as general information; they are regulated, and the choice, dose and timing must be decided by a qualified professional under local rules. Consult a landscape architect or agronomist before applying.

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