Balloon Cactus, Ball Cactus, Green Ball Cactus, Blue Ball cactus
Royal Horticultural Society’s Award of Garden Merit
Synonyms of Parodia magnifica (3) (Last updated on 12-10-21 from Plants of the World Online): Eriocactus magnificus F.Ritter, Eriocephala magnifica (F.Ritter) Guiggi, Notocactus magnificus (F.Ritter) Krainz ex N.P.Taylor
Parodia magnifica (F.Ritter) F.H.Brandt is the correct and accepted name for this species of cactus. It was named and described as such by Fred Hermann Brandt in Kakteen Orchideen Rundschau in 1982. It was first named Eriocactus magnificus F.Ritter by Friedrich Ritter in Succulenta (Netherlands) in 1966.
The label says Notocactus magnificus which is now a synonym of Parodia magnifica. Notocactus magnificus (F.Ritter) Krainz ex. N.P.Taylor was named and described as such by Hans Krainz and ex-author Nigel Paul Taylor in Cactus and Succulent Journal of Great Britain in 1980. Eriocephala magnifica (F.Ritter) Guiggi is also a synonym of Parodia magnifica.
The genus, Parodia Speg., was named and described by Carlo Luigi (Carlos Luis) Spegazzini in Anales de la Sociedad Cientifica Argentina in 1923.
As of 11-10-21 when this page was last updated, Plants of the World Online by Kew lists 64 accepted species in the Parodia genus. It is a member of the plant family Cactaceae with 146 genera. Those numbers could change as updates are made on POWO.
THERE ARE SEVERAL LINKS AND GROWING INFORMATION AT THE BOTTOM OF THE PAGE FOR FURTHER READING.
I brought this Parodia magnifica home from Lowe’s on March 29, 2019. The label stated it was a Notocactus magnificus but when I did research I found that name is now a synonym of Parodia magnifica.
It was grown by Altman Plants and the label states:
Notocactus magnificus is a beautifully geometric globular cactus from South America. Blue-green globe with wool and golden spines along the vertical ribs. Forms large clustering mounds in time. Lemon yellow flowers in summer. Protect from frost. Provide bright light; hardy to 20F; to 12” tall. Water thoroughly when the soil is dry.
Parodia magnifica is a native to Rio Grande do Sul in southern Brazil and are also found nearby in Paraguay, Uruguay, and Argentina. The IUCN Red List has them listed as an endangered species. Llifle says they grow on hilly grasslands and on walls between cracks in rocks or in the shade of larger growing plants in deciduous forests. In this climate, they experience warm and cool seasons and grow in soil with plenty of organic matter from the decomposition of other plants. It is said Parodia magnifica can survive temps as low as 20° F if their soil is dry and they are not subject to frost.
This Parodia magnifica was in an 11 oz. (3 1/2” wide x 3 1/4” tall) pot when I brought it home. The cactus measured approximately 1 3/8″ tall x 2 3/8” wide without the spines at the time. The golden spines on the side of the cactus are approximately 1/2” long and the spines on top are approximately 3/4” long.
Once temperatures warmed up enough I moved the cactus to the back porch and the succulents and most of the other plants to the front porch. I was fairly busy over the summer so I didn’t take as many photos as usual.
I had to move the potted plants inside for the winter on October 11 because an “F” was in the forecast. I always photograph the plats as I move them inside and measure the cactus and some of the succulents. The Parodia magnifica measured 2 5/8″ tall x 2 5/8″ wide. Remember it was approximately 1 3/8” tall x 2 3/8″ wide when I brought it home on March 30.
Llifle (Encyclopedia of Living Forms) says:
Description: Parodia magnifica is a bluish-green geometric globular cactus with wool that grows in clusters and produces absolutely brilliant yellow flowers. These cacti develop a slight depression on the crown, which may become distorted with age. Parodia magnifica glistens under a haze of pale yellow spines. Cristate (wavy-edged) forms are available but these are usually grafted plants.
Habit: Plants at first solitary, forming large clustering mounds in time.
Stems: Globose, becoming short cylindrical with age, blue-green, glaucous, oblique apically. It grows 30 (or more) cm high and 7-15 cm in diameter.
Ribs: 11-15, straight, symmetrical, acute.
Areoles: White at first, later yellowish close together or almost contiguous.
Spines: 12-15 or more, bristle-like, thin, flexible, goldens yellow, 8-20 mm long.
Flowers: Borne several at a time apically, funnel-shaped, sulfur-yellow, 4,5-5,5 cm long and in diameter; pericarpels with dense white wool and brownish bristles.
Blooming season: Flowering occurs in summer through early fall and will bloom several times during warm weather.
I find the top of cactus particularly interesting…
Several cactus and succulents needed to be repotted so I started doing that on November 13. Some just needed their soil changed while others needed bigger pots. I used about 50/50 Miracle Grow Potting Soil and pumice for the mix. I repot any time of the year as necessary, but I have found Fall is a great time. After a summer of regular watering, the potting mixture can become kind of hard when it is decreased. Repotting in the Fall gives the plants nice and loose soil for the winter. In the above photo, you can see the Parodia magnifica had a nice set of roots.
Unlike many cactus species that grow in Mexico, Parodia species grow in southern Brazil in soil with more organic matter in their soil. They develop a more extensive root system so they prefer a somewhat deeper pot.
Some cactus don’t grow a large root system but they still need repotting as the “stem” starts to fill the pot. There was still plenty of soil in the bottom of the pot with this Parodia magnifica but the stem had become almost as large as the pot.
In years past I would just take the plant from one pot and put it in another without doing anything with the roots. Then later, when I repotted again, sometimes I found the roots still tightly packed in its original wad. So, I started loosening the roots before repotting and sometimes trimming off a few on the bottom. They grow new roots and a little trimming doesn’t bother them. Sometimes you may find rotten or dried roots that need to be trimmed as well.
Then I always make sure the plants are centered in the new pot.
Here the Parodia magnifica is happy in its new pot… Normally, I only increase the pot size by 1 inch but sometimes I can’t find the right size of pot. I have LOTS of smaller pots so there is always a good selection. You can find pots in quantity on Ebay and Amazon. Of course, you may want a nicer pot…
I had to move the potted plants inside for the winter on October 15 because an “F” was in the forecast. As always, I took photos and measurements. The Parodia magnifica did very well over the summer and measured 2 1/2″ tall x 2 3/4″ wide (disregarding the spines) on October 15. I took another measurement on November 13 when I am updating this page and it had swelled to 3″ wide! Maybe I goofed in October but I doubt it. I watered the cactus the day before I moved them inside and I think that makes them swell up 🙂
This cactus is very neat from the top. It reminds me of the crown for Imperial margarine.
I didn’t have to move the potted plants inside for the winter until October 28 in 2021. There wasn’t a chance of “F” in the forecast until then which was quite unusual. The Parodia magnifica did very well over the summer and still measured 2 1/2″ tall but it grew to 3 1/4″ wide.
Origin: Southern Brazil
Zones: USDA Zones 9b-11(25 to 40° F/-3.8 to 4.5° C)
Size: Hmmm… The label says 12”, Dave’s Garden says 24-36”
*Light: Full sun to part shade.
**Soil: Fast-draining. Good quality potting soil amended with pumice (50/50) or additional perlite and chicken grit (2-1-1).
***Water: Regular watering during the summer. Barely, if any, during the winter.
*During the summer, I keep most of my cactus on the back deck where they receive full sun. During the winter most cactus aren’t picky about the light because they are basically dormant. For several winters, mine were in front of the east-facing sliding door in the dining room so they didn’t get much light but they did great. I built a new shelf for the bedroom so now they are in front of a west-facing window. Most of the succulents are on a shelf in a south-facing window in a cool bedroom but a few are in my bedroom.
**When it comes to potting soil, finding the “sweet spot” is not exactly that easy when materials are limited. Cactus and succulent enthusiasts (and experts) do not recommend using peat-based commercial mixes but what choice is there for most of us. They say to use a loam-based mix… Hmmm… Our soil is loam, so do I just use dirt? Well, no because “dirt” is heavy and you need a “light” material. There is A LOT of cactus and succulent recipes online and some get pretty elaborate. Many say to use sand as an ingredient, but if you do that, it needs to be very coarse, like builders sand, because “ordinary” sand, like for sandboxes, is too fine and it clogs up the air space between the coarser ingredients. For MANY years I used 2 parts Miracle Grow or Schultz Potting amended with an additional 1 part of perlite and 1 part chicken grit. Schultz doesn’t seem to have as many large pieces of bark. Cactus and succulent enthusiasts recommended using pumice instead of perlite and grit so I checked it out… The “guy” at General Pumice (online) recommended using a 50/50 mix of potting soil and pumice. General Pumice has 3 different sizes to choose from depending on the size of the pot. SO, in 2018 I bought a bag of 1/8″ and mixed it 50/50 with Miracle Grow Potting Soil. I liked it pretty well. Then in 2020, since most of the cactus were in larger pots, I ordered the 1/4″ size. Pumice has a lot of benefits over perlite and has nutrients that are added to the soil when watering. Pumice is also heavier so it stays mixed in the soil instead of “floating” to the top. Still, there is the issue of the mix getting very hard once you stop watering the plants during the winter when you stop watering. I think this is because of the peat in the potting soil… SO, instead of re-potting the cactus and succulents in the spring, I started doing it during the fall and winter so their soil would be loose. Since you don’t water as frequently during the winter if at all, the timed-release fertilizer does not activate. I have not tried coir, but I am looking into it…
I think a lot of growing tips online are written by people who never grew succulents and cactus. They just copy from one website and paste it to theirs. You have to sort of mimic the soil where species grow in their native habitat. For that, you almost have to go see for yourself… Typically, they grow in fairly rocky soil.
***I water my cactus and succulents on a regular basis during the summer but barely ever in the winter (maybe a little in January) until close to time to take them back outside.
When you bring your new plants home from the store, you need to check their roots and the soil to see if they are wet. If so, you may want to re-pot it right away. It is advisable to re-pot them in a better potting soil more suitable for cactus and succulents.
I will continue adding more photos and information as time goes by. I have two other Parodia species in my small and growing cactus and succulent collection. They are Parodia crassigibba and Parodia lenninghausii and you can go to their pages by clicking on their names.
I hope you enjoyed this page and maybe found it useful. If you have any comments, questions or suggestions, I would like to hear from you. Please click on “like” if you visited this page. It helps us bloggers stay motivated. 🙂 You can check out the links below for further reading. The links take you directly to the genus and species of this plant. If you see I have made an error, please make a comment or email me at email@example.com.