krishi- A kit greenhouse will be cheaper than anything someone can build for you. If you want to get an ok greenhouse cheap, consider the Harbor Freight greenhouse; they have a 6 X 8 for $260. It's inexpensively made and it is somewhat difficult to put together, but many people on this forum have them, and there are many posts here about how to improve them or solve assembly problems. If you want a better quality greenhouse, take a look at Costco online; they currently have a 6 X 8 Palram GH for about $580. Also, check out the greenhouses available online at greenhousemegastore. What spending a little more money will get you is a heavier-duty frame, and better glazing that will last longer, and better quality additional items, like shelving and vent openers. Here is a link that might be useful: HF greenhouse

I do notice that my Harlequin (also small, bushy, decorative dahlia) tend to act like that early on. Later, the flowers seem to grow more at the branch tips and show off more. For me, that's now--but I feed a lot. I'm not sure of the variety you use, so that may differ. You can prune buds to get larger flowers if you want to, but I don't bother. The 2" flowers on decorative dahlia look about right. It doesn't do much for taller stems, though. And if you can't resist pruning a few leaves, go ahead--but don't go overboard on that. The leaves are producing energy.

The good news is that you don't need greensand (0-0-3). Western Canadian soils generally have enough potassium and it's not necessary to add additional amounts. If your soil is very sandy, then you may need to apply potassium. That's probably why it's not easily available even at places such as Professional Gardener. Don Heimbecker, who was the premier rose grower in Calgary, used ammonium phosphate (16-20-0) on his roses. It has the advantage of having about 14% sulfur. I would add that to my vegetable garden before spending the money on greensand. If you need to be "organic" then a Complete Organic Fertilizer such as suggested by Steve Solomon is a good choice. A simpler method would be just to apply soybean meal which can be purchased in 25 kg. bags at feed stores. Divide the protein content by 6 to get the nitrogen equivalent. If you do use an organic fertilizer, make sure that there is a good amount of organic matter in the soil or add an inch of compost at the same time. Organic fertilizers need to break down and that requires micro-organisms which are pentiful in organic matter. Your limiting nutrient will usually be nitrogen. Most sources will say that you need 4-6 lbs. of nitrogen per 1,000 square feet per year for healthy plant growth. So apply the soybean meal at a rate based on the nitrogen content. For high demand vegetables you can side dress. Alfalfa meal is also a good source of nitrogen and other trace elements but it takes longer for the nitrogen to become available to plants. Here is a link that might be useful: Gardening when it counts: growing food in hard times By Steve Solomon

try Monte Packaging Here is a link that might be useful: Monte Packaging