Batten Blooms
PL. —Diascia × hybrida 'Apricot Queen'Botanical illustration — drop image
Diascia × hybrida 'Apricot Queen'

Diascia 'Apricot Queen'

SpringSummerFall
8a–10bHardiness zone
Peak bloom windowZone 6b · frost-offset weeks
Winter
Not in bloom
Spring
Peak bloom
Summer
Peak bloom
Fall
In bloom
Peak bloom
In bloom
Background

Diascia 'Apricot Queen' is a compact hybrid twinspur that produces dense masses of small apricot-salmon flowers on slender stems from spring through fall. Its low, mounding habit suits container edges, window boxes, and front-of-border planting. Performance peaks during cool weather; it is not a heat-tolerant plant.

Native to South Africa, it grows best where summers stay below 90°F. In zones 9–10, plants may slow or go semi-dormant in midsummer and rebound as temperatures drop. Cutting plants back by half during heat stress encourages fresh growth and renewed flowering once conditions cool. 'Apricot Queen' is typically propagated from stem cuttings rather than seed to maintain cultivar consistency. It prefers moderate soil fertility; excess nitrogen pushes leafy growth at the expense of flowers.

In mild coastal climates it can provide near-continuous flowering with minimal inputs. Good air circulation around the crown reduces the risk of botrytis in cool, humid periods.

Good companions
Chinese Windmill Palm
Care guide
SunFull sun to part shade
WaterRegular
SoilWell-drained, moderately fertile
Spacing12–18 in
Height10–18 in
Zone8a – 10b
Seasonal tasks
spring
cutPinch stem tips back by one-third after transplanting to encourage branching and a denser mounding habit before the main flush of growth.
watchCheck for aphids and spider mites in warm, dry conditions. Treat with insecticidal soap at first sign of infestation before populations establish.
sowSet out transplants in early spring once overnight temperatures stay above 35°F. Space 12–18 in apart in well-drained soil with moderate fertility.
summer
cutCut plants back by half if temperatures above 90°F cause flowering to stop and foliage to deteriorate. Water consistently to keep roots moist through the heat.
watchMonitor for botrytis grey mould in cool, humid weather, particularly on crowded or spent stems. Remove affected tissue immediately and improve air circulation around the crown.
fall
cutTrim lightly as temperatures drop in fall to remove spent material and stimulate a fresh flush of growth before the first frost.
sowIn zones 9–10, take 3–4 in stem cuttings in fall and root in a sheltered spot to overwinter as young plants for the following season.
Common problems

Powdery mildew

Symptoms

White or grey powdery coating on leaves — usually starting on older growth in humid conditions or when nights cool.

Treatment

Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.

Botrytis (grey mould)

Symptoms

Grey fuzzy mould on petals and stems, worst in cool wet conditions.

Treatment

Remove affected parts immediately. Improve air circulation. Avoid overhead watering. Apply copper fungicide if severe.

Crown Rot

Symptoms

Lower leaves yellow and wilt; the base of the rosette turns brown and soft, sometimes with white fungal threads at the soil line. Plants collapse in wet conditions.

Treatment

Remove and destroy affected plants. Improve drainage and avoid overhead watering. Do not mulch directly against the crown. Space plants for airflow and avoid replanting in the same wet spot.

Damping Off

Symptoms

Seedlings collapse at the soil line with thin, water-soaked stems; seeds may fail to emerge or rot before sprouting.

Treatment

Sow in well-draining mix, avoid overwatering, and ensure good airflow. Remove affected seedlings and let the surface dry between waterings.