Revisiting, what is the biggest and most double zinnia?
Bob
7 years ago
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What is the biggest and most double zinnia?
Comments (20)GZ4, "I didn't know that I could get bigger and bigger zinnias just by saving the seeds of my bigger flowers. How does that work?" Zinnia flower size, shape, and form is determined by a number of different genes. Zinnias are primarily insect pollinated, and pollen gathering insects travel from flower to flower gathering pollen. In that process they accidentally pollinate many zinnia stigmas. Since they gather pollen from many different zinnias, sometimes they self pollinate a zinnia and sometimes they cross pollinate the zinnia with pollen from zinnia blooms that they just came from. As a result, open pollinated zinnia seeds actually contain some hybrids as well as some selfs. And some of those hybrids may involve zinnias that themselves are already hybrids by the same random pollen exchanges. Many times those bee pollinated hybrids are between similar parents. Similar, but different. So a packet of red dahlia flowered seeds will produce a variety of red dahlia flowered zinnias. So called pure varieties or strains are not actually pure. If you look closely you will see small or not-so-small differences between the individual plants and flowers. Your seed packet may have given you dozens of different varieties of red dahlia flowered zinnias, some of which are actually crosses between two different red dahlia flowered zinnias. By saving seeds only from the larger zinnias, you are choosing to grow only seeds from the larger red flowered varieties and discarding the smaller red dahlia flowered varieties. Seed saved from larger specimens will also vary in size (and other characteristics), but their average size will be somewhat larger and you may find still larger specimens. Each time a new seed is formed, a re-shuffling of genes occurs, and you may get a different combination from any that you have ever seen before, and some of those "shuffles" may give you your biggest zinnia yet. "I love the look of GIANT dahlia flowers--where should I start and what should I do to breed those?" Start with some commercial dahlia flowered zinnias that appeal to you. When they bloom out, study them to see which ones are your favorites. I usually cull out zinnias that I don't like to make more room for those that I do like. Then, recognizing that the specimens that you have selected may actually be hybrids between similar but different parents, you are free to self them with the expectation that their progeny will continue to vary, but will have changed some in the direction that you want them to go. Or you may to choose to cross-pollinate some of your favorites to "shake them up" some. Each seed you save will be a different recombination from the genes of its two parents. Remember, zinnias are composites, so each petal is actually a different "flower", with genes that are at least a little different from the petals next to it. "I was told that it's pointless to save the seeds of hybrids, but if their flowers are big and they are only crossed with other dahlia types, it sounds like maybe I should. " You should. Don't tell rose breeders not to save seeds from hybrids. Rose breeders cross hybrids with hybrids with hybrids, and then cross them again so that very complex ancestries build up. No reason you shouldn't do the same with zinnias. And if some non-dahlia flowered zinnia has a trait that you would like in your dahlia flowered, then by all means cross it in and then select out the combination of traits that you are going for. Prehistoric zinnias had all kinds of different forms that we haven't seen yet. By recombinations of recombinations, we can bring combinations of those unseen traits to the forefront. I personally am not a fan of the dahlia flowered zinnia flowerform. It tends to hide interesting bicolor and tricolored petals because the petals are stacked so close together. This dahlia flowered bloom partially conceals an interesting two-tone color scheme. This zinnia bloom does not conceal its petals with thickly overlapping petals. I refer to this zinnia flowerform as "Aster flowered". Various insects, such as aphids, leafhoppers, thrips and such, can "hide" in those closely packed zinnia flowerforms. So my personal preference is for "open" zinnia flowerforms. But that is just my subjective preference, and you are free to have your own. By saving seeds from your favorites, your personal seedstock will come to resemble your preferences. "I guess the other thing I could do is just grow giant dinner plate dahlias instead of trying to coax zinnias into a larger size. :-) Haven't explored that option yet." Maybe you should. Breeding your own dahlias is definitely something that you can do. I prefer zinnias because they grow faster, and you don't have to wait so long to see the results of your crosses or personal selections. ZM...See MoreRevisiting Pear and Plum Bagging
Comments (15)I live in an extraordinarily dry climate in the rocky mountain foothills. Never a problem with fungus or mold. Of course, I cut off the corners, but I doubt that would save you in Maryland. Its true you can't completely surround the fruit most of the time. Until my last crop, it was enough, though. What happened last crop was the peaches did fine until they began to bulge past the opening at the top. We also had an infestation of apple maggots which is a new development here. I don't know if that was what they were, or just the second or third generation of codling moths. I would pre-staple the top about one third of the way down. Of course I would make sure the bag was zipped on that one third. Then I pull the bag tight on the peach against the staple. zip and staple as close to the fruit as I could. I toyed with the idea of getting a special dedicated stapler, then taking my angle grinder or somehow cutting off the part of the stapler past the anvil as close to the anvil as I could get. I think that would really allow me to scrunch up there. Perhaps next year. This year I am slicing off only maybe 2/3 of the lip of plastic past the ziploc, in hopes that that will help. Growing organically (if you count putting disposable plastic bags on every single fruit as 'organic') is a game of inches. The bags work very well with our birds. We also have a lot of crows here. I've never seen them bother the fruit, but they don't allow other birds to hang around and get too creative--that's the crow department....See MoreWhat was your biggest gardening mistake...
Comments (28)Virginia, I have to agree with you. My new resolutions are: 1) Never visit a nursery right after watching a garden show, reading a gardening magazine or going on a garden tour. ;O) 2) Never buy a plant unless I know exactly where I'm going to plant it. ... And where it's most likely to live. 3) Try harder to come up with an overall plan to integrate what I have with what I want. 4) Try for more perennials and fewer annuals. (I call this last resolution 'buying vs renting'.) 5) Spend more time developing edible landscaping. Now let's see if I can *keep* these resolutions......See MoreBenary's Giant Zinnias - what am I doing wrong?
Comments (18)I did a soil test late in the summer last year, it showed the soil was very acid. We had the recommended amendments made early this spring. We used a turning plow to make raised beds - it worked beautifully for moisture retention and drainage - but I'm gardening on a slope, which brings on more challenges. For those of you who used raised beds, are they permanent? Or do you till them down at the end of the season. How deep are they? The Zinnias must go - what I do have growing is either riddled with mildew or the Japanese beetles are feasting on them - or they're too short or too small. Time to till it up and start working toward next year. Next year will be better, right? I do appreciate all your responses!! I know I'm green, but I'm learning as I go along and you all are a wealth of information! This is not "Big Business" for me - more of a learning experience for my kids (and me). I'm grateful to you who are willing to take the time to share your knowledge. Thanks!...See MoreBob
7 years agoBob
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7 years agoSweetMonkeyCheese Z9 Tampa
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