Oh boy, here we go. Corn gluten meal both acts as fertilizer and inhibits seeds from sprouting. It's simple —- make some seedbombs with harmless and beneficial plants, flowers, beans, peas, vegetables, etc. Make other seedbombs, slightly smaller, with the fun stuff and corn gluten meal. Make the "fun" seedbombs smaller, since they'll have a yellowish color and you'll want to wrap them in the same clay as the others so they'll all match later.
Tell the dupes that the seedballs include vegan organic fertilizers (no, not that organic fertilizer —- I said vegan, Carl) that are specific to nurturing the seeds in each ball and will grow best if placed intact, but not to worry if they break a few. The seedbombs with the corn gluten meal are your later waves, since their sprouting will be delayed by several weeks. The seedbombs should probably be in the rough shape of a bar of soap, since that is a good trade-off between breakage resistance and giving the plants optimal ground contact.
The first waves should be common garden plants. BEANS are particularly great, since they grow amazingly well and are basically bushy vines anyway. Put less pretty edible plants in the delayed seedbombs: Palmer's amaranth, kudzu, fun things like that. Don't spread poisonous plants. While the thought of nignogs killing themselves trying to get high off Datura is fun, sticking to edible plants will make legal attacks MUCH harder. Remember that we're trying to recruit virtue-signaling dupes to spread these, our usual OPSEC won't be possible here.
Make sure that your kudzu seedbombs are 2-stage —- kudzu seeds with corn gluten meal in the inside, snap pea seeds on the outside —- the snap peas will provide ground cover to give the kudzu time to get established before anyone notices. Include more snap peas or other beans with the kudzu as well, to give the kudzu more time to grow before anyone notices.
We've missed the planting season for this year, so mark your calendars for New Year's
That'll be the time to start organizing your guerrilla gardening parties to "hit back at The Man for keepin' da bruthers down" or whatever. We could even spin it as "providing healthy options to the people stuck in food deserts" or similar excuses. Plan the actual distribution to start in mid-to-late spring and continue for a few weeks or so. Ideally, distribution will be over before the fun starts.
That's great —- more dupes to muddy the waters about just where all that kudzu came from.
That's a flower rather than an edible, so it would be best included in 2-stage seedbombs that are all flowers. Find some way to make the "pretty" seedballs look different from the "food" seedballs and use a similar trick with Himalayan balsam seeds inside with corn gluten meal and other more common flower seeds in both layers.
Make sure that your dupes can tell between "food" seedballs that should go "anywhere" and "pretty" seedballs that will help beautify the neighborhood with nice pretty flowers. You can put Datura in the "pretty" seedballs if you insist.
The "food" seedballs should be much more numerous than the "pretty" seedballs and needn't be marked. For marking the "pretty" seedballs, try poster paint. It's cheap, reasonably non-toxic, biodegradable and commonly used in grade-school art classes, where it's often called "tempera" even though it isn't really tempera. Draw little flowers on the "pretty" seedballs and make sure your dupes know that the paint is biodegradable so the seedballs won't pollute the environment. Hipsters will just gush over a cheesy painting of a little flower in a pot. Use screen printing and ink-transfer techniques rather than doing each of these entirely by hand.