First some basics. This may seem obvious, but you must leave flower heads on plants that you want to set seed. Deadheading to prolong bloom is not an option unless the plant produces enough flower stalks that you can deadhead some and leave others to fall off naturally while seeds form. If you grow vegetables and fruits to eat, allowing plants to go to seed may spoil the intended product (for example, lettuce leaves taste bitter once plants flower) or reduce the quantity of edibles, or the seeds themselves may be what you plan on eating (peas, for instance). A further consideration is that many popular garden plants, grown for flowers or for food, are hybrids and either do not produce seed or their seeds are not viable (viable means able to germinate and grow). In any case, before you can collect seed from any plant it must go through the whole cycle of flowering, being pollinated, developing seed, and ripening. Some plants develop seeds within pods of varying descriptions, others hide their seeds inside fruits or berries, and still others harbor their seeds directly inside the dying flower heads. In all cases, any seeds produced will develop in close proximity to the spot where the flowers originally appeared. If you can not locate seeds on a particular plant, try posting a question to the Growing From Seed forum here at GardenWeb for assistance. It's best to let seeds ripen on the plants until they are *almost* ready to disperse on their own. It's a common mistake to separate seeds from the plant before they've finished developing; any collected too early will not be viable. Once seeds have finished enlarging, they will generally change color (from whitish or green to tan, brown, or black) and begin to dry out. Pods will start splitting open, berries or fruits will shrink and wrinkle, or flower heads will begin to fall apart, dropping the seeds within. On many plants the seeds don't ripen all at once (check daily), and it can be useful to tie a small paper bag or the toe cut from panty hose over the seed heads to prevent dispersal before you can harvest. If this method isn't practical, collect the seed heads or pods before they are completely dried out (i.e. papery dry), or the seed may either have dispersed or will fall out when you shake the plant stems while breaking off the pods or heads. *Cutting* the stems will help to prevent this sort of seed loss. As long as you wait until the flower seed heads have turned dark and fairly dry, or until the bracts ("leafy" shape that surrounds the petals of a flower where it attaches to its stem) or the pods themselves have quit enlarging and begun to dry out, you can cut and take these indoors to finish ripening in a cool, shaded place inside a closed paper bag (this will prevent you from losing seeds which disperse *explosively*, such as Impatiens and Phlox). How do I know if my plants are hybrids that may not produce seed true to the parent plant? Always save any tags or labels on plants you buy and ask questions about plants you obtain from other gardeners. Unfortunately, many commercial growers don't tag their plants very informatively (even the conscientious ones make mistakes), and many gardeners only know their plants by common names, which can vary widely throughout different parts of the country and world. Your best bet is to learn all you can about the plants you have or want and post questions about specific ones on the Growing From Seed forum to get additional advice.

Always save any tags or labels on plants you buy and ask questions about plants you obtain from other gardeners. Unfortunately, many commercial growers don't tag their plants very informatively (even the conscientious ones make mistakes), and many gardeners only know their plants by common names, which can vary widely throughout different parts of the country and world. Your best bet is to learn all you can about the plants you have or want and post questions about specific ones on the Growing From Seed forum to get additional advice.

I really enjoy collecting seeds, even if I sometimes don't know what to do with them! I think I am a little bit like King Midas and they are my "gold." But I sometimes have trouble figuring out how to do it. for one thing, I never know when to harvest the seeds. sometimes I'm too early, and the seeds aren't ripe. Sometimes I'm too late, and they are all gone. Last year, I was hardly able to get any seeds from my Yvonne's salvia. They seemed to drop the instant they were ripe. I would either find bracts with white seeds, or empty ones. Right now, I am looking at Joe Pye weed and Liatris spicata that have finished blooming. The flowers are either completely or partially brown. I brought in a few and as soon as they dried their little "umbrellas" opened and the seeds turned black. Am I safe in assuming that these guys are good to go? can I bring in more flower heads? earlier in the season I had a devil of a time trying to gather seeds from Geranium maculatum. I wasn't even sure which part of their complicated structure was the seed! they are on a spring mechanism and they go "sproing" and it is easy as pie to miss them before they drop. With considerable effort I managed to get about a half dozen seeds. I hope I can germinate them! Liz

If your Ranunculus have finished flowering and have achieved fertilisation there will be very obvious seed bearing structures where the flower was. Pictures at This link.These need to ripen naturally until they are beigeish and dry enough to start opening on their own. You can then harvest the whole seed head, put it into a paper bag and wait until the seed drops out if its own accord. Whether or not the offspring will resemble the parents depends on the species, hybrid or cultivar of Ranunculus you have. I am guessing you are talking about R asiaticum, in which case the offspring will be variable. Btw Ranunculus is singular rather than being the plural of 'Ranuncula'.