Garden Care Guide

Caucasian Pincushion Flower Care

Scabiosa caucasica

A plant grown for its long-blooming, showy, pinks-like flowers that likes sun and well-drained, chalky soil. It is sensitive to winter wetness, and for continuous flowering the faded flowers need to be removed regularly.

Hardy · -25 °C / -13 °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
  • Pruning: If it was not done in autumn, clear dry stems and leaves from the previous year at the base.
  • General care: The most important rule: excellent drainage. Water collecting in winter rots the roots.
  • Pests & diseases: Root and crown rot are the only risks.
  • Frost risk: Its roots are very hardy; no protection is needed.
February
  • Fertilizing: Get ready for an application of slow-release balanced fertilizer (low in nitrogen).
  • Pruning: If cleanup has not been done, now is the last chance.
  • General care: This is one of the best times to propagate by division (it can also be done in March).
  • Pests & diseases: Be prepared to protect the newly emerging shoots from snails and slugs.
  • Frost risk: Newly emerging shoots may be sensitive to frost.
March
  • Watering: If the soil begins to dry, 10-15 L/week; reduce if there is rain.
  • Fertilizing: Spread a layer of compost over the soil or apply low-nitrogen balanced NPK fertilizer at the label rate; do not overapply.
  • Plant protection: Check the newly emerging fresh leaves for snails and slugs.
  • General care: It is time to propagate by division and replant.
  • Frost risk: Late frosts can damage young shoots.
April
  • Watering: Start regular watering; soil should stay moist (15-20 L per week).
  • Fertilizing: To encourage flowering, a potassium-heavy liquid fertilizer can be given; do not overapply.
  • Pruning: When the first flowers begin to fade, start deadheading by cutting the stalks at the base.
  • Plant protection: Check for aphids; if signs of powdery mildew (white powder) begin, increase air circulation.
  • General care: The plant grows rapidly and begins to flower.
  • Pests & diseases: Be careful of powdery mildew.
May
  • Watering: Continue watering, 15-20 L per week.
  • Fertilizing: Continue fertilizing.
  • Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
  • General care: Flowering continues.
June
  • Watering: In a long drought, water deeply once a month.
  • Fertilizing: A potassium-rich liquid fertilizer may be given once a month; do not overfeed.
  • Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
  • Plant protection: Keep watching for powdery mildew.
  • General care: It is excellent for use as a cut flower.
  • Pests & diseases: In hot and dry weather, look for signs of spider mites.
July
  • Watering: In midsummer, deep watering every 15-20 days is enough. Water so that the soil is wetted to a depth of 10-15 cm from the surface.
  • Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
  • General care: Requires maintenance.
  • Pests & diseases: Monitor for pests.
August
  • Watering: In midsummer, deep watering every 15-20 days is enough. Water so that the soil is wetted to a depth of 10-15 cm from the surface.
  • Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
  • Plant protection: Check for spider mites and powdery mildew.
  • General care: It continues to flower if well cared for.
  • Pests & diseases: Insufficient watering causes the plant to collapse and flowering to stop.
September
  • Watering: In a long drought, water deeply once a month.
  • Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
  • Plant protection: The risk of powdery mildew may increase with the autumn rains.
  • General care: At the end of the season, you can leave some flower heads as seed for birds.
  • Pests & diseases: Carry out a general health check.
October
  • Watering: Reduce watering as temperatures fall.
  • Pruning: You can stop deadheading.
  • General care: In winter the seed heads become a food source for birds (goldfinches).
  • Pests & diseases: Remove leaves affected by powdery mildew.
November
  • Watering: If the winter rains start, stop watering completely.
  • Pruning: After the stems and leaves have fully dried from frost, cut them completely back to soil level.
  • General care: Clearing fallen debris prevents diseases for next year.
  • Frost risk: Its roots are frost hardy.
December
  • Pruning: If winter cleanup has not been done, do it now.
  • General care: The plant is dormant.

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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