Waratahs can be grown from cuttings but the more usual way is from seed. Fresh seed has a high viability and germinates in 2-3 weeks after sowing. Plants should be potted up as soon as they are large enough to handle and grown in a sheltered position.

When selecting a plant for planting into the garden ensure that it is at least 15 cms (6") tall. Plants of this size should have a noticeable swelling at the base of the stem where it enters the soil. This 'swollen'; tissue is called a lignotuber and it contains numerous dormant buds. When established in the ground old canes can be cut right back to the lignotuber which will promptly sprout new stems. This is an evolutionary adaptation to some of the extremes of the Telopea environment (particularly bushfire) which ensures the plants's survival.

Of the four species, T. mongaenis has proved to be the most easily established in cultivation.

Several waratah cultivars, some of them hybrids between the T. mongaensis and T. speciosissima are beginning to be available at local nurseries

When selecting a plant for planting into the garden ensure that it is at least 15 cms (6") tall. Plants of this size should have a noticeable swelling at the base of the stem where it enters the soil. This 'swollen'; tissue is called a lignotuber and it contains numerous dormant buds. When established in the ground old canes can be cut right back to the lignotuber which will promptly sprout new stems. This is an evolutionary adaptation to some of the extremes of the Telopea environment (particularly bushfire) which ensures the plants's survival.

Waratahs generally appreciate a friable soil of good texture. The incorporation of a rich leaf compost or similar material is beneficial. If other soil is add to the site, always incorporate it into the existing soil. Do not excavate a large hole and then fill it with a good soil mix, as water will accumulate in the hole resulting in wet feet and probable plant death.

Good drainage is essential, and if possible should extend to a depth of 45 cm (18"). Drainage can be improved by building a raised bed or mound. If this is done, be sure to break the existing soil where the mound is to be located so that the new soil can be incorporated with the existing soil.

Watering can be carried out during hot or dry spells. Never let the soil dry out completely. Over-watering in heavy soils will cause waterlogging.

Waratahs appear to be adaptable to various situations but a semi-shaded position or at least shade from hot afternoon sun is desirable.

Mulch the surrounding soil to a depth of 5-6 cms (2"-2 1/4"). This will help to keep the soil moist and keep the surface roots cool. Mulch also helps to prevent weed growth in the vicinity of the plant. If weeds are allowed to grow they provide direct competition to the plant for nutrients and water. Removal of weeds may also disturb the surface roots and result in setback of the plant.

Plant the waratah in a place that it is able to receive plenty of air circulation and room in which to grow.

Flowers can be cut for indoor decoration or can be removed from the plant after flowering has finished by cutting the canes back to at least half of their length. Do not let seed set unless it is wanted as the formation of seeds sap a lot of strength form the plant.

Waratahs respond well to applications of a slow-release nitrogenous fertilizer such as blood-and-bone or a slow release general purpose fertilizer such as Osmocote applied at 100 gm/sq.m. once each year in Spring or a suitable equivalent.