What's On The Grow

What's On The Grow

  • We Are Hiring: Store Manager Vacancy At Our Flint (North Wales) Store

    We Are Hiring

    We are looking for a Store Manager at our Flint store, the successful candidate will lead the in-store team and ensure an amazing and inspiring shopping environment for our customers. We are seeking a leader who will evaluate operational processes, maintain high retail standards, develop talent and also deliver profit growth through effective communication and practical leadership.

    We need someone who will:

    - Make informed commercial decisions every day using your knowledge of the industry, local market and the needs of our customers
    - Manage a team and successfully achieving targets
    - Be passionate about horticulture, or be looking for a complete change of retail sector
    - Be massively passionate about customer service and seek to deliver the best customer service to each customer every day, personally and through a driven motivated team
    - Be proactive, enthusiastic and open-minded and always lead by example showing a commitment to our company values and future
    - Be confident in your own ability and be able to take considered risks and decisions with the best interests of the company in mind
    - Use your energy and drive to motivate and empower the team to be the best that they can and to achieve the highest results and standards possible
    - Have knowledge of cash reconciliation and store opening and closing procedures
    - Be expected to be flexible about when you work, covering store opening hours on a rota basis, including weekends

    The role initially begins with a 3 month training package which will give you a great foundation of the knowledge and experience needed to become a successful store manager with Holland Hydroponics.

    This is a permanent position based in Flint, North Wales, covering 40 hours per week 5 days out of 7. From time to time you may be required to work at one of our other stores.

    If you feel you have the necessary experience and skills for this role, all candidates MUST call our recruitment hotline 0161 818 4645. Candidates who only send a C.V and do not call our recruitment hotline will not be considered for the post.

  • Holland Hydroponics Now On Instagram

    Holland Hydroponics Instagram

    You can now keep up with the daily goings on at Holland Hydroponics via the social networking app Instagram, its only early days, but already you can see our warehouse dweller Ducting Man, the incredibly long tap root, health and safety in action, to root stim or not to root stim and Chris tending to our lovely Sunflowers.

    Follow us @hollandhydroponics and use the hashtag #hollandhydroponics where we’ll post daily images and videos as well as any special offers we’re currently running both in-store and online.

  • Life And Death Of Grow Room Pests

    Not only spotting pests and diseases, but then identifying and killing them can be the bane of every indoor gardeners life, luckily, the current issue of HydroMag (May-July 2015) features an in-depth article on what to look for, and how to tackle the problem, now read on...

    The Usual Suspects

    Summer is almost upon us. The time of year that indoor growers hate the most! Not only for extra heat getting in the way, but also for the myriad of pests that will try and gain access to your indoor garden of eden.

    If there is one thing that will make any indoor grower pull his hair out, it is an un-noticed infestation of pests in their garden. Whilst the little critters may not have the brazen criminal genius of Kyza sozey, what they lack in brain smarts they more than make up for in numbers and persistence, a bit like the kids in ‘City of God’. The best way to combat pests is to understand them, and know their typical signatures. Taking a leaf out of Sun Tzu’s Art of War, you need to know your enemy if you want any hope of defeating him/her. Fear not diligent reader, Hydromag is here to give you all you need to know about the main few little sods that you will encounter in your grow room, and how best to go about getting rid of them. The following pages will serve you well as a reference point to identify exactly what it is that has infiltrated your inner sanctum, and what steps you need to take to eradicate them.

    The Law Enforcement Team

    Spider Mites

    Spider Mite

    Vital Stats

    - Habitat: Underside of leaves
    - Preferred Conditions: Hot and Dry – 25-30C and <55% RH
    - Egg hatch time (25C/55%RH): 4 Days
    - Egg to Adult (25C/55%RH): 9.5 Days
    - Total Eggs laid per female (25C): 130

    1. Early Leaf Damage

    The early signs of spider mites can be spotted by the damaged they cause when feeding on the underside of the leaf. The white dots that appear like pin pricks on a leaf it is a sign they are setting up camp and planning an invasion.

    2. Late Leaf Damage

    As the mites feast away on the leaves the damage develops to causing significant yellowing and even necrotic patches.

    3. Webs

    A mature colony of spider mites will start to spin webbing for use as rapid transport between leaf structures, and even between plants. You can see in the pics they will lay eggs on the webs too.

    4. Mites

    When you spot the early symptoms and turn the leaf over, you will be able to see the tiny insects with the naked eye and even better with a magnifier. There are two main types of spider mite; the two spotted mite and the red mite. The two spotted is more common and when you look up close you can see its beige coloured body with two clear spots on its back. The red mite is more of an orange-red colour.

    5. Eggs

    If you have a keen eye you will also be able to see the eggs they lay, which are tiny round balls between 0.1-0.2mm in diameter. These start transparent in colour and turn an opaque milky colour before a yellow straw colour when ready to hatch.

    Spider Mites


    Spraying will combat mites well. Follow the labels carefully with chemical sprays. For contact spays that work by physical modes of action it is good to spray every 3-4 days in order to kill the young mites emerging from the newly hatched eggs. Being diligent with your sprays by coating both the top side and underside of the leaf as well as the whole plant is a must, particularly with contact sprays. Predators are successful where you spot the problem early and if you can keep temperatures down and humidity up. Spraying to get the upper hand, then introducing predators is a good approach.



    Vital Stats

    - Habitat: Underside of leaves
    - Preferred Conditions: Hot and Dry – 25-30C and <55% RH
    - Egg hatch time (25C/55%RH): 3 Days
    - Egg to Adult (25C/55%RH): 13.5 Days
    - Total Eggs laid per female (25C): 1

    1. Early Leaf Damage

    The feeding damage by Thrips to the underside of the leaf causes small silvery patches to develop which can be seen on the top side. Many people say the early damage can appear like a tiny section of a shiny slug or snail trail. You can see from the pictures you have to have a keen eye to spot this damage.

    2. Late Leaf Damage

    As the Thrips feed from the leaf you may see leaf distortion as well as small patches of yellow and brown as the leaf cells die (A). As this point you will be able to see the Thrips clearly when you turn the leaf over (B). As the Thrips feed and the damage spreads large leaf areas may develop yellow/white patches. You will also be able to see tiny black dots among the feeding damage, this is the thrips poo.

    3. Thrips

    These pests are fairly easy to spot, and have two distinct observable life stages; the larval stages and the adult. The larvae of Thrips appear as tiny beige coloured maggots around 1mm in length, but when you look up close you can see their legs and antennae. They live mainly on the underside of the leaves and when disturbed they like to hide out at the leave veins. Thrips larvae will eventually pupate into an adult and the pupa can often fall onto the surface of the growing media.

    4. Eggs

    Thrips lay their eggs inside plant tissue, and can been seen in some crops as tiny bumps on leaves, but are often very difficult to see at all. Thrips will also crawl into flowers and buds, and lay eggs on soft tissue, flower petals and even soft parts of stalks.



    Spraying foliage regularly to kill both larvae and emerging eggs is recommended for sprays that work by contact. If you can spray every 3-4 days for 2 weeks you will gain control of the situation. Adults are difficult to kill without chemical sprays, so disrupting their life cycle by killing the larval stages and eggs works well. The predatory mites Amblyseius cucumeris are great at controlling small populations as these mites eat the larvae and stop population explosions. Predatory mites generally need higher humidity and long day lengths to function well so establishing them in vegetative growth is a good approach.


    Some growers see small insects jumping about on the surface of the growing media or on the surface of water in saucers or reservoirs and think they are Thrips. These insects are actually Springtails and are relatively harmless. Adult Thrips are darker in colour and appear brown or black and get up to 1.4mm in length. The adults fly and can move from plant to plant within a grow room very quickly. There are many species of Thrips but the main culprits of indoor crops are the Western Flower Thrips.

    Fungus Gnat aka Sciarid Fly

    Fungus Gnat aka Sciarid Fly

    Vital Stats

    - Habitat: Root Zone
    - Preferred Conditions: Moderate and Moist
    - Egg hatch time (25C): 5 Days
    - Egg to Adult (25C): 21 Days
    - Total Eggs laid per female (25C): 100-300

    1. Early Signs

    With fungus gnats, you do not often see any plant symptoms early on. The most common first sign is seeing the tiny black flies buzzing about. They are slow and easy to squish in the air by clapping your hands. By using yellow sticky traps you can see quite quickly the extent of your problem. The flies like wet soil and coco, so leaving the traps on the tops of pots will catch some pretty quickly if they are about.

    2. Fungus Gnat Larvae

    As you can see by the pictures, these are little 5-12mm long white-translucent maggots with a black head, and these are the main problem. The adults fly around rather annoyingly, and lay eggs on the growing media. The larvae hatch and feed on whatever organic matter is available, but they love roots. If you can see fungus gnats buzzing about and you look closely at your growing media surface, or on rockwool blocks, you will most likely find some larvae. With rockwool, they are attracted to algae that grow on the surface, and with soil and coco they are more attracted to pots that are constantly damp or wet. Fungus gnat larvae can do considerable damage to plants by destroying the root system, particularly young plants with relatively little root mass. A common indirect effect of the larvae eroding the root system is the spread of disease. The larvae are vectors for fungal pathogens, and when they munch on the roots they are opening up tissue ready for invasion.

    Fungus Gnats


    The adult flies only survive for up to 7 days but can the females lay up to 300 eggs so it’s vital you do your best to catch or kill these. The easiest was is by using yellow sticky traps positioned near the pots. However, all the damage is being done in the root zone so this must be your target area. There are root drenches that can be used containing various ingredients that kill the larvae, use every 5 days to ensure you kill the newly hatched larvae. Predatory insects are excellent for fungus gnat control. The nematodes packs are very effective and last up to 6 weeks and the predatory mites Hypoaspis miles are very efficient as a preventative as well as treatment.


    So there you have it, now you are armed with the necessary brain smarts to deal with pests in the correct manner, choose your method of attack wisely! The ultimate key to a pest free environment is preventative measures: Bug meshes on intakes, change your clothes when entering your room, clean your room thoroughly between grows and possibly most importantly scrutinise/quarantine any clones you are (un)fortunate enough to have received. Measures like this in keeping your room squeaky clean will help to ensure you’re not starting a fight on the back foot. Essentially you want to aim for a room that would make Howard Hughes proud.

    So there you have it, thanks go to HydroMag for allowing us to publish the article, you can also check out the entire magazine online HERE while treatments to help get your grow room pest free are available on our online store at HERE.

    We are also able to supply Live Predators for common pest infestations, but as these are living organisms, they are only available in-store.

  • All Stores Will Be Closed On Sunday 28th June 2015

    Closed 28th June 2014 - Stock Take

    Well its that time of year again as our summer stock take deadline looms, so this is just to notify our loyal customers that all 4 of our stores, that’s Manchester, Burnley, Huddersfield & Flint, will be closed on Sunday 28th April 2015.

    This will not effect our online sales as orders can still be made via our website, but if you’re planning to visit any of our stores on Sunday 28th June, they will unfortunately be closed, the good news though, its for one day only and all stores will be back open on Monday 29th June.

    And for those that are in Manchester that weekend, the access road to our superstore will actually be shut due to the Great Manchester Cycle Race which takes place on the very same day, so if you have some spare time, why not pop along to cheer the competitors on and more information can be found on their website at www.greatrun.org/great-manchester-cycle.

  • Plant Magic Plus Boosting Powder Now Available!

    Plant Magic Plus Boosting Powder

    Have you been struggling to get hold of House & Garden Shooting Powder of late? We know we have, but to fill that void, the UK based Plant Magic Plus have stepped in and recently released Boosting Powder, a premium PK boost supplement that’s been developed in the UK with UK water!

    And Holland Hydroponics is happy to announce we now have this amazing new product in stock and is available in single sachets for £8.95 or packs of 5 sachets for £32.95, it can be purchased both in-store and online HERE, and read on for more information...

    Plant Magic Plus Boosting Powder is a premium PK boosting supplement that’s been developed to heighten the production of fruits & flowers, improve the overall yield along with enhancing flavours and aromas.

    Boosting Powder by Plant Magic Plus should be used during the final 2-3 weeks of flowering prior to flush and you will notice the difference as you see your plants bloom with vigor and health as you approach harvest.

    If you’ve ever used House & Garden’s Shooting Powder but are struggling to get hold of it in the UK, Plant Magic Plus Boosting Powder is an ideal replacement as it not only performs in an identical way, it’s also been developed by a UK company, using UK water, making it a perfect choice for growers living in the British Isles.

    - Premium PK boost supplement
    - Heightens fruit and flower production
    - Improves final yield plus enhances flavours & aromas
    - Ideal replacement to House & Garden Shooting Powder

    Buy Plant Magic Plus Boosting Powder now at www.hydroponics.co.uk/plant-magic-plus-boosting-powder.html.

Items 1 to 5 of 28 total

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
SSL Certificates