Pots, Raised beds and Glasshouses

I just purchased a house in Rakaia and am moving in soon. My question is when is it best to plant veg ready for summer and what flowers can I plant that will last all year?

Can you suggest what edible plants would be suitable to grow in pots on my north facing deck and the correct soil mix. 

We have made three macrocarpa planter beds. Should we line these beds in heavy black plastic first or just fill the beds up with soil/compost? Any suggestions for our first planting would also be appreciated. 

What summer veggies can I grow in the garden over winter, I'd love to have tomatoes and zucchini, but doubt there'd be enough light. Would bringing them out when it's sunny during the be enough for them if in pots?

How do we prepare the glasshouse soil ready to use again after summer growing season in preparation for spring planting? Do we sterilise the soil or add more nutrients? Should we do it every year before spring planting?

With rain and snow over winter, soil can become very damp and boggy. What’s the best way to improve drainage in garden beds and lawns?

I am planting out my glasshouse and wondering what grows well in the glasshouse and what doesn’t. I have tried courgettes and tomatoes. Can I grow cucumbers and capsicums?

Which type of garden is best for planting veggies/herbs e.g raised or flat garden and how do you layer the soil?

We’ve just moved into a new house and have limited space garden wise.  We’d like to grow our own vegetables this summer; can this be done in containers?  

I have tried growing veggies such as lettuce in pots but have not had much success.  Are there any tips or tricks you can share to get a decent crop? 

I have large macrocarpa planter boxes in which I will hopefully produce vegetables. My problem is finding the best product to seal the insides of the boxes. Any recommendations?

I’ve been given a glasshouse and wonder what grows well in the glasshouse. My tomatoes are doing great but the lettuces and spinach are not. Also would a mushroom farm be good in a glasshouse?