Below are different things I’ve done in the past, but what I’ve found that is necessary when working with little or no budget (regardless of the project) are patience, collect as you go, and start off small.
You will find things when you least expect it – be prepared for that whether it be storage or having a bit of extra cash on hand. Have an idea of what you want/need and when you come across something on that list, pick it up. If the only things you have are tomato seeds and sweet potatoes, start there and work your way forward.
FREE OR LOW COST SEEDS/PLANTS/ETC -
See if there are any Facebook groups in your area that swap plant material. If not, then start one. I’ve sent and received seeds by mail with the cost of a stamp and an envelope. I’ve had folks drop off plant materials and pick them up at my home. I’ve gotten some awesome plants and seeds that would be considered landraces. Craigslist may be another source as well.
Department of Agriculture Extensions sometimes have free workshops with seeds or seedlings available. Our local Extension will have giveaways or very low cost offerings throughout the year.
The grocery store is a wonderful place! Potatoes, sweet potatoes, ginger, sugar cane, yams all grow well directly from the store. In this thread it’s been suggested to get bags of beans – great idea! Seeds from purchased produce such as tomatoes, bell peppers and different fruits have all worked well for me. Some of my best tomatoes have come from ones I’ve gotten from the store.
Look for plants that have gone to seed/fruit and grab some of the mature seeds/fruit. I’ve done this mainly for trees or ornamental plants, but I’ve also done this for elderberries, starfruit, guava, etc.
Going to a big box store after a frost/freeze. This may be more of a southern thing, but I’ve gotten lots of plants over the years that I’ve nursed back to health after buying them for a fraction of what I otherwise would have paid. This may not be a direct source for your garden, but this may be good for trading. Someone may want the crazy exotic plant you nursed back to health for some vegetable seeds you may want.
Let opportunist veges grow where they land. Sometimes when I bury my kitchen scraps, something will sprout and I let it grow. I’ve harvested onion tops, tomatoes, potatoes, herbs, etc.
CONTAINERS –
Collecting containers that would otherwise go in the trash or be recycled. Ask your friends, family and neighbors to collect them for you.
Saving toilet paper or paper towel cardboard tubes work great as well. I cut tabs at one end and fold them to create a bottom. I had a problem with them unravelling after a while when I watered my seedlings. Then I found that if I dipped the tubes in beeswax then they stayed together. This is also a good way to share seedlings.
Looking at big box stores/nurseries for any unwanted containers. Every once in a while there will be a rack stacked up with containers free for the taking.
Looking at Craigslist and Facebook groups are good for collecting containers too.
SOIL and AMENDMENTS – this one can be a toughie…..
Using local soil can work a lot of times. In the case it doesn’t work or doesn’t work very well, then keep an eye out for low cost amendments or soil.
I’ve purchased broken bags at big box stores for a fraction of the cost. I’ve also purchased bags of very inexpensive compost or soil to amend my local soil.
Composting is fantastic, although I don’t produce enough plant waste material to make a bin/pile. I normally direct compost a la Ruth Stout-ish. I will take my kitchen scraps and bury them in my gardens. It’s worked fantastically. Ask your family, friends and neighbors to collect their scraps too.
Using woodchips has been a godsend for me. When I prune my plants I put them through a wood chipper. No, the wood chipper is not really cheap, but chop and drop works just as well in my food forest. (FYI, my wood chipper was around $160 and takes branches up to 2 inches….may be something to save up for eventually.)
While we’re at it, grow things that make good compost/chips. I grow Mexican Sunflower and sweet almond shrubs to chip up. Both grow crazy and give a good amount of material. The sweet almonds feed the bees/butterflies too.
Learning which soil amendments will do what you want in the soil…or what plants will do well in the soil you have. Testing your soil is key (an inexpensive test at a big box store or one from your Ag Extension) and the rest just requires reading or asking questions. At one of the houses I lived in the soil was off the charts alkaline. I learned that if we just continue to use our mulching mower on our grass, nature would eventually work….and it did.
Look in your area for manures – online groups are good for this as well. There are always folks who need to get rid of copious amounts of manure.
Local landfills sometimes will offer compost free of charge to residents who use their services. I’ve had good results with this.
PESTICIDES –
I normally don’t use chemicals. I’ve learned about pest cycles, companion planting, trap plants, planting techniques, hand picking pests, etc. It’s worked well for me. I’ve learned to appreciate my passion fruit vines will be just fine after the butterfly larvae have eaten the leaves. And that the ladybugs will show up in force if I just let the aphids run wild on my night blooming jasmine…and the jasmine will keep on growing. For the EXTREMELY rare times I need to use a pesticide I will use something that is the least harmful depending on the situation. I’ve used neem oil, Organicide, teas made with tobacco or tomato leaves, etc.