I have sown my lawn with Tui Superstrike Easycare seed and reseeded bare patches twice. Is Easycare a blend of creeping grasses? If it isn't, do any of your seeds contain a creeping grass and can I combine some of that with Easycare seed? 

• It is quite common for newly sown lawns to be patchy, with regular watering and mowing on a high setting over time the lawn will eventually thicken up. 
• After the first few mows if the lawn is still patchy then it can be over-sown, spring and autumn are the best times to do this.
• Ensure the seed is sown into a quality lawn mix such as LawnForce Lawn Preparation mix this can be  applied over the existing lawn.
• Rake the area first to break up the soil surface tension, then apply a layer of Lawn Preparation mix, water it in as it will fall below the existing grass.
• Lawn Preparation mix contains phosphorus for strong root growth, Saturaid to help retain soil moisture and a slow release fertiliser for healthy grass growth.
• Superstrike Easycare blend contains perennial rye grass and fine turf fescue. Perennial rye grass is a clumping type grass and fine turf fescue creeps. 
• Other creeping types are Tall Fescue, Kikuyu, Kentucky Blue Grass and Brown Top. 
• Kentucky Blue Grass and Tall Fescue are in the Superstrike Hot & Dry blend. 
• Superstrike Tall Fescue and Superstrike Kikuyu are blends on their own and can be mixed with Superstrike Easycare if you are looking to add creeping grasses.
• You can oversow with any of these, the best time is spring and autumn.
• Lawn maintenance will be your best option until it is the right season to oversow.
• Mow the lawn regularly on a high setting, this stimulates growth and helps crowd out broadleaf weeds.