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🌱 Protect your garden’s glow-up—fungus doesn’t stand a chance!
Spectracide Immunox is a powerful, multi-purpose fungicide concentrate designed for professional-grade garden care. It cures and prevents a wide range of fungal diseases on ornamentals, fruits, nuts, vegetables, and lawns. Rainproof once dry, it offers up to two weeks of protection per application. Easy to mix and apply, this formula delivers targeted, effective disease control without harming plants or pollinators, making it a must-have for thriving, healthy gardens.












| ASIN | B0035H0RA8 |
| Active Ingredients | Myclobutanil |
| Best Sellers Rank | #3,125 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #15 in Insect & Pest Repellent Spray Concentrates |
| Brand | Spectracide |
| Brand Name | Spectracide |
| Customer Reviews | 4.5 out of 5 stars 2,392 Reviews |
| Global Trade Identification Number | 00071121610003 |
| Item Form | Spray |
| Item Type Name | Fungicide |
| Item Weight | 1.2 Pounds |
| Liquid Volume | 16 Fluid Ounces |
| Manufacturer | United Industries |
| Model Number | HG-51000 |
| Part Number | HG-51000 |
| Target Species | Insects |
| UPC | 071121610003 |
| Unit Count | 16.0 Fluid Ounces |
| Warranty Description | 100-Percent Guarantee |
N**᭡
It literally works. No foliar damage. Fixed an early blight in one night.
This works. Period. I live in zone 8, and summers are extremely humid. So together with an out of balance good /damaging bugs, for my gardens there will be fungus. No matter how many steps I take for proper garden practices, not over watering, not wetting foliage, no leaving debris on the ground from trimmed plants etc. Anyway, last year was the first time I used it and it saved my gardens. This year, just as helpful . I really had a difficult time deciding with what type of fungicide to choose from . I was considering the copper one. I'm just glad I went with this. Yesterday, there were signs of blight I could just see it on half of my plants . The pumpkin vine leaves were all droopy and the female buds turned brown and died before opening. I sprayed the vine , and the VERY next day it had perked back up with a green female bud visible. Same with my annual flowers . I can spray this properly diluted ratio (I go a little under just to be safe) directly on any plant parts and there has been zero foliage burn. I don't have to spray it directly on the flowers, bc I do not want to harm pollinators. However, without this product , there would be zero flowers /plants for any pollinators and my plant therapy would be no more. I am not even being dramatic. This works. It's safe for garden flowers and plants. Does not cause any browning. Simple and effective . Fact. I keep this stocked (although it lasts a long time with one application, and there are plenty of applications with this concentrate). I use a 32 oz high output regular style spray bottle. This method is certainly less hassle compared with the other styles, excluding mass planting areas. I will include a photo for reference. First picture - this pumpkin would not exist if I hadn't used some spray on the leaves and mainly the female buds that never opened- small, brown/yellow that would shrivel right off. The poor things were just helpless, it seemed nothing could keep them healthy! However, this product did such, ridding whatever fungus present. A week or so later, a robust female flower was able to prosper. Second picture - we had a tail end of a hurricane (2017) come through, which "mashed" this zinnia to the ground. The area was soggy and humid, yet this fungicide prevented fungal infection. Every orange flower is on this one zinnia. This example is fairly odd and unflattering, yet it demonstrates the effectiveness of this product. Third picture- the type of bottle referenced above. Last: balsam impatient plant, day before & day after Long review but my passion is this right here, and without this product, in my area I would not have thriving plants.
E**2
As a low-cost alternative, this worked!
So far so good, it managed to stop the fungus growth in its tracks on my St. Augustine lawn. I will probably treat again in 2 weeks to maintain the lawn and prevent further spread. I just sprayed my rose bushes, flowers and bushes today at 1fl oz to a gallon of water. I'm hoping that will stop the rust spots that I'm seeing. I will update once I see a change if at all.
B**D
Works great, but use it early and be careful on sensitive plants.
This product worked as described, but I had a few issues with it. My main complaint is that I think I waited much too long to use it. I decided to first try some "organic' and "home" remedies to control the mold issue I was having in and on potted plants on my lanai. That was my first mistake. While I was dabbling with White Vinegar, and an assortment of other household chemicals, the mold was destroying my plants. By the time I actually had gotten around to applying this product, the damage was quite extensive. The product got to work quickly, but most of the damage had been already done. I mixed the product as described, and immediately noticed a reduction in powdery mildew and mold on the leaves of the plants. Most of them required a second and third heavier application before seeing the mold eradicated completely. I have a wide variety of flowers and each had a varying reaction to this product. Most had little to no reaction to it, however, there were a few that were worth noting. A few of my more delicate orchids definitely had some yellowing of leaves and wilting flowers. They came back pretty strong. What was hit most strongly was my Blue Ginger. I don't think it will ever be coming back. What the mold didn't kill, the fungicide most definitely did. Overall, I would recommend this product with a few disclaimers. First, start at the first warning signs of mold or any fungus, whether it is in the soil, on the leaves, or on the stalks. Second, if using on potted plants, make sure you are mixing the solution exactly. Too much of this product is not a good thing, it will burn up your delicate plants. It is much better to mix it too light, and apply it more often. Mold is resilient! Third, apply secondary precautions to help the fungicide. Remove affected plants, if possible, from others as mold will spread, increase air flow, and increase sunlight. Make sure your potted plants have plenty of drainage! All of these are mold deterrents. Oh, and cover your face both around the mold, and when using this product. Both have shown to be pretty noxious, especially if you have pre-existing breathing issues.
J**A
SAVED MY PEACHES!!!
I bought this product because my peach tree which is only about 2 years old began to show signs of leaf curl which I know can defoliate my tree early and cause it to die. I decided on this product based upon some research on the internet and decided to give it a try to cure the leaf curl. For starters, I have sprayed my tree down as I was supposed to in order to avoid this but upon doing some research, the spray I was using wasn't strong enough to use at the end of the season. It was just an organic three in one fungicide, insecticide and miticide, I found that the product I was using is best just to spray on during the season as opposed to preventing diseases long term. Anyway so I decided on this product. My tree started showing signs about two weeks ago and I tried my original three and one spray which didn't help in the least bit, I would pull the damaged leaves off every day and it showed no signs of stopping or slowing down. I bought this and mixed it in a spray bottle as directed only putting in a little of the fungicide and I added some dish detergent to help it stick to the leaves better. I sprayed it on the leaves on a warm, sunny day in order to help the drying process and pulled off the rest of the damaged leaves. Usually if I would pull them all off, I would get at least 4 more the next day. After using this I had two leaves the next day and then the following day I didn't notice any. Since I have applied it about a week ago, I have only noticed one other leaf that had it. I'm optimistic that this cured my tree and will be reapplying it at the two week mark just to be extra cautious. Fingers crossed that this stuff continues to work.
M**R
Great for South Florida
I have excellent results with this product. When used as directed it will cure the black spot. My roses had new growths and leaves within the first week. I used weekly for the first few months. I use it at least monthly for prevention. I had a lot of products that weren’t as effective in the past. I use them every now and then to prevent resistance. I have a lot of bees , they arrive early so I spray in The evening. I haven’t seen a decline in population. However They are like addicts for other flowers such as cuphea and angelonias and I don’t spray those so that maybe a variable. I thought a few roses were over sensitive to the product because they burned every time. I didn’t mind those spots However recently other roses burned and some were slow to recover. The same type of roses in another area did fine. Eventually the burned rose looked water deprived as well. I got a moisture meter and learned some areas weren’t retaining water well. So make sure plants are well hydrated before spraying. One problem I have is that Amazon has never packed this product well. One cracked leaked saturating the bottom of the box. Never order chemicals with other stuff especially other chemicals because not everyone packs chemicals with care.
P**R
This stuff works.
I'm in Florida and have really struggled with fungus on my tomato plants. Such a bummer when they finally set some fruit and then start slowly dying. With the weather here it's almost impossible to avoid and copper sprays didn't work as treatment or preventative. Got this to use on my fall tomatoes as I started seeing spotting and leaf wilt. Trimmed the affected leaves and used this and within 2 days my tomatoes were growing again and looked green and healthy. Will keep this on hand and use as a preventative measure going forward.
A**D
Got rid of powdery mildew on Dogwood
I planted a Cherokee Dogwood last fall. It leafed out nicely in spring but sometime in June I noticed it had become affected by powdery mildew, killing all the new leaves. I first used neem oil, which is supposed to work, every week, but after 5 or 6 weeks, the new growth was still getting ruined. I finally found advice online recommending this product. After 1 treatment, new growth started coming in normal. After 3 treatments, all is still well. There’s still a lot of damage on the old leaves, but I am hopeful I’ve saved the tree. The only downside is I need to make only about 16 oz of formula at a time, and it’s hard to figure out how much concentrate to put in that amount of water. And, none of my spray bottles work all that well to apply it. But apparently it’s doing the job. Thank you!
A**A
This fungicide is working very well.
I am using this on my roses, heucheras and also on a variegated euonymus that I bought at Costco that gets a horrible white powdery mildew and leaf drop. It hasn't cleared up the powdery mildew 100% but I think it works better than the fungicide by Bayer. Specracide Immunox is also approximately $5 less so I'm giving this item five stars for value and effectiveness. In past years I've tried using neem oil and a sulfur solution mixed with water that were both totally useless. Now for the first year, after using this product my heucheras do not have any rust on them at all. Not even a trace. Needless to say, I'm ecstatic. It's incredible and they look so healthy. I'm so happy to finally find a product that has gotten rid of that nasty fungus. In past years I used to be so nervous while watering my plants and trying not to get the leaves on my heucheras wet (because this can exacerbate the disease). Now I water them and get their leaves wet and they look beautiful. My roses are looking quite good, too. I didn't start using a fungicide until about mid May and this is my first time using one. Come next year I am going to start spraying even earlier in the Spring to really knock it out before it gets a chance to start. I highly recommend this item.
G**S
Much needed item
Good to have
Trustpilot
2 months ago
1 month ago