Zantedeschia 'Siberia'

Autumn - late · Outdoors

Apply a deep protective mulch

Provide a deep protective mulch in autumn, spreading it around the plant and covering it to give it both nutrients and some protection against the weather.

A mulch is a covering that can: protect the soil surface from rain, heat and cold; deter weeds; provide nutrients. Organic indicates that material has vegetative origin e.g. manure, compost. Synthetics i.e. plastics, or stones are often called mulches.

Spring-Autumn · Indoors

General houseplant fertiliser

Feed this plant with a general houseplant fertiliser.

Spring-Autumn · Indoors

Feed regularly during growth

This plant needs feeding for optimum foliage growth and flowering. Feed regularly, but moderately. Feeding at alternate waterings while growing, Spring to Autumn, will encourage gentle growth. Don’t feed in winter. Follow the feed manufacturer's guidance.

Spring-Winter · Indoors

Keep moist, but not standing in water

Keep moist at all times. Water more sparingly in winter, keep the compost just moist.

Spring-Winter · Indoors

Soak completely when watering

Water until water comes out of the bottom of the pot. Leave for 30 minutes or so until the compost is fully moist, then pour away the excess water so the plant pot is not standing in water. (This avoids waterlogging which can cause "root rot".)

Spring-Autumn · Outdoors

Water frequently to keep the soil moist

The plant thrives in moist or boggy soil, doesn't tolerate dryness and should be watered frequently, not only after a period of drought, but if the soil begins to dry out spring to autumn. Check plants in pots more frequently, especially in hot weather.

Spring - early-mid · Planting

Divide when too large

The plant can be divided if it becomes too large or another plant is required. This may involve physically dividing the clump in two, removing offsets or small bulbs or dividing rhizomes. The new plants can be grown in pots or planted in the ground.

Summer - early · Outdoors

Apply slow release fertiliser

Apply a slow release fertiliser which is spread around the root area of the plants soon after they have come into growth. (Or apply a liquid feed at regular intervals throughout the growing season.)

This is a simple way to provide a nutrient boost as a single annual procedure.

Compost · Planting

Houseplant compost for repotting

Repot using any good quality house plant compost.

Indoor temperature · Planting

Average/cool room, cooler room (min 10C/50F) in winter

This plant thrives in average or cool rooms when grown as a houseplant (average room temperature is around 20C/68F). The minimum advisable temperatures at night and in the colder months are 10C/50F.

Indoor plant · Planting

Position in a sunny spot, close to window

Give this plant a position where there is as much light and sunlight as possible, within 2-3 metres of a sunny or bright window (one that is south, east, or west facing).