Second one has under-developed leaves.

I don't think these plants have a disease. I have had plants that look like the 2nd one. What plant is the 2nd one? I would remove some outer leaves and repot into a smaller pot. Some plants really prefer a smaller pot. Flush the plant first with clean water to remove fertilizer build up and put in some fresh soil.

Your violets look fine.

The first one just has spoon-shaped foliage. Some African Violets have differing types of foliage. See the link for more information on this.

http://www.avsa.org/sites/default/files/files/Flower%20-%20Leaf%20Types.pdf

Your second photo shows a plant which has gone through various variations in care during its life. The lesser developed OUTER leaves indicate a "lesser" level of care ... when those leaves were first being grown out from the crown (probably months ago). Most African Violets (except maybe those which received super consistent care) will exhibit some degree of what you see in your second plant.

Another explanation is that perhaps these leaves were injured in some way which stunted their full development.

If you want, you can remove these OUTER "baby" leaves ... to make your plant look more consistent. NEVER remove leaves from the center of the plant.

Thanks for the comments. It's good to know they are fine. The second plant is Black Swan. Can't remember the first one. I am away from home right now.

I grew Black Pearl Sport. I grew it for a year, no flowers. The leaves were always wild. I tossed it. The flowers I have seen on line are amazing, I sometimes wish I kept it.

Why do you say never remove leaves from the center. I did it already to help blooming and it works?... is there any danger for deasese?

Marianne from Canada back on forum...

Hi Marianne ...

Proper growth for an African Violet occurs from the crown in the center of the plant. The plant blooms as it grows from the center crown, as shown in the 2nd photo below ...

If you damage the crown, you risk stopping the proper grwoth of your plant.

The only alternative to crown growth is ... suckers, which is the plant attempting to reestablish "new" crowns. In the indoor planting environment, as opposed to growth in the wild, ... suckers will eventually OVERFILL your pot, and the crowding of multiple crowns/plants togeter, SHARING the same resources, will ultimately SHUTDOWN blooming. The photo below shows the difference between an African Violet growing from the center crown ... and an African Violet struggling with an abundance of suckers.

African Violet with proper center crown

For the reasons outlined above, it's typically BEST to maintain the CENTER CROWN, as it maximizes the plant's continued blooming and attractiveness ...

Whoa, Aegis - that is one graphic photo there. A picture is worth a thousand words! Nice job.

Oh, that poor violet!

Looks like somebody knit a sweater w AV leaves.

So I should never take off leaves from the center? I did it few time in the past and it help blooming !?! Maybe in a long term view I would see the difference. Do you have tricks to help blooming?

Does the water in bottle better? I used to water with bottled water in the past but now I have to much A.V. My water is tap water that I let stand a night on counter.

Thank you very much for these informations and pictures!

Marianne

To keep your violets blooming, provide them with adequate light and fertilizer.

... and avoid triggering the resource sapping suckers that will arise as a result of plucking leaves from the center crown.

Check to see if your water provider uses Chloramine in their water processing.

If not, your tap water should be fine, ... but, if so, you should switch to Spring water. I get mine from the grocery dispenser for 40 cents per gallon.

Thank you aegis!

Marianne